Oregon Weather By Month

January

Average High Temperature: 47°F (8°C)

The state of Oregon is known for its diverse climate, with varying temperatures throughout the year. The average high temperature in Oregon can differ significantly depending on the time of year and location within the state.

In terms of average high temperatures by month, winter months typically see highs ranging from 47°F (8°C) to around 50°F (10°C). January is usually the coolest month, with an average high temperature of about 47°F (8°C), while February tends to be slightly warmer, averaging around 49°F (9°C).

Spring months in Oregon see a significant increase in temperatures. March’s average high temperature reaches approximately 55°F (13°C), while April and May experience highs of around 63°F (17°C) and 68°F (20°C), respectively.

Summer is the warmest season in Oregon, with June averaging an impressive 77°F (25°C). However, temperatures can fluctuate during this time due to various weather patterns. July and August often see highs in the mid-70s to low 80s Fahrenheit (23°C to 27°C), while September’s average high temperature begins to drop slightly to around 72°F (22°C).

Autumn brings cooler temperatures, with October averaging an average high of about 64°F (18°C). November sees highs around 54°F (12°C), and December averages a similar temperature to January, around 47°F (8°C).

Keep in mind that these temperatures are averages, and actual high temperatures can vary significantly depending on the location within Oregon. Coastal areas tend to be cooler than inland regions, while valleys may experience warmer temperatures compared to higher elevations.

Overall, Oregon’s diverse climate means there is no single “average high temperature” applicable across the entire state. However, understanding the typical temperature ranges by month and region can help plan outdoor activities or travel accordingly.

Average Low Temperature: 36°F (2°C)

Oregon’s climate varies from west to east due to its diverse geography. The western part of the state has a mild oceanic climate with cool winters and wet summers, while the eastern part is more arid and temperate.

The average low temperature in Oregon ranges from around 35°F (2°C) in the coastal region to as high as 45°F (7°C) in the valleys of central Oregon. In the mountainous areas, the temperatures are generally lower, with winter lows often dropping below freezing.

Here’s a breakdown of the average low temperatures in Oregon by month

• January: The coldest month, with an average low temperature of 34°F (1°C) in the coastal region and 23°F (-5°C) in the mountainous areas.
• February: The average low temperature is around 35°F (2°C) in the coastal region and 24°F (-4°C) in the mountains.
• March: The temperatures begin to rise, with an average low of around 38°F (3°C) in the coastal region and 29°F (-2°C) in the mountains.
• April: The average low temperature increases to around 41°F (5°C) in the coastal region and 33°F (1°C) in the mountains.
• May: The temperatures continue to rise, with an average low of around 45°F (7°C) in the coastal region and 39°F (4°C) in the mountains.
• June: The warmest month, with an average low temperature of around 50°F (10°C) in the coastal region and 43°F (6°C) in the mountains.
• July: The hottest month, with an average high temperature of around 77°F (25°C) in the coastal region and 85°F (29°C) in the valleys of central Oregon.
• August: The temperatures remain warm, with an average low of around 52°F (11°C) in the coastal region and 45°F (7°C) in the mountains.
• September: The temperatures begin to cool, with an average low of around 48°F (9°C) in the coastal region and 40°F (4°C) in the mountains.
• October: The average low temperature is around 42°F (6°C) in the coastal region and 34°F (1°C) in the mountains.
• November: The temperatures continue to cool, with an average low of around 38°F (3°C) in the coastal region and 28°F (-2°C) in the mountains.
• December: The coldest month, with an average low temperature of 34°F (1°C) in the coastal region and 23°F (-5°C) in the mountains.
• The variations in temperature throughout Oregon can be attributed to its geography and the presence of the Pacific Ocean to the west. The state’s diverse climate has led to a wide range of ecosystems, from temperate rainforests to high deserts.

Precipitation: 5.6 inches (14.2 cm)

Precipitation in Oregon is characterized by a diverse range of precipitation patterns throughout the year, influenced by the state’s varied climate zones and geography. The Pacific Ocean has a significant impact on Oregon’s weather, with moisture-laden air from the ocean leading to frequent precipitation events, particularly along the coast.

The western part of Oregon receives most of its precipitation during the winter months (December, January, and February), with an average annual rainfall of around 30-40 inches (76.2-101.6 cm) in the coastal regions. This is largely due to the prevailing westerly winds that bring warm, moist air from the Pacific Ocean.

The eastern part of Oregon has a much drier climate, with an average annual rainfall of around 10-20 inches (25.4-50.8 cm). The precipitation in this region is more variable and often occurs as snow during the winter months.

Oregon’s mountainous regions receive significant amounts of precipitation throughout the year, with some areas receiving over 100 inches (254 cm) of snowfall annually. The Cascade Range creates a rain shadow effect, resulting in significantly drier conditions on the eastern side of the mountains compared to the western side.

The summer months (June, July, and August) are generally dry across Oregon, with most areas receiving less than 1 inch (2.5 cm) of rainfall per month. However, occasional heatwaves can occur during this time, bringing thunderstorms and heavy precipitation in some areas.

Fog is a common occurrence in the coastal regions of Oregon, particularly during the summer months when cool ocean air collides with warm air from the interior. This fog can lead to significant precipitation, especially on the northern coast where the prevailing westerly winds contribute to this phenomenon.

February

Average High Temperature: 49°F (9°C)

Oregon’s climate varies significantly across different regions due to its size and geography. The state is known for its rainy weather, but it also experiences a wide range of temperatures throughout the year.

The average high temperature in Oregon ranges from 35°F (2°C) in January, the coldest month, to 77°F (25°C) in August, the warmest month. This variation creates diverse seasonal patterns across different parts of the state.

The coastal regions tend to be cooler than inland areas, with temperatures fluctuating around average highs between 45-50°F (7-10°C). The Willamette Valley, which includes cities like Eugene and Salem, has a more moderate climate, with average high temperatures ranging from 40-70°F (4-21°C).

The Cascade Range dominates the eastern part of the state, creating a rain shadow effect that results in drier conditions. This region experiences relatively cooler temperatures, especially in winter, with average highs often below freezing.

Spring, which typically begins in March and ends in May, sees a significant increase in temperatures across Oregon. Average high temperatures rise to around 60-70°F (15-21°C) as the state emerges from its chilly winter months.

Summer, from June to August, brings the warmest weather of the year, with average highs reaching their peak at 77-85°F (25-29°C). The coastal regions remain relatively cooler during this time, while inland areas can become quite hot due to the dry air.

Autumn, or fall, which spans September and November, marks a return to cooler temperatures. Average high temperatures begin to decline, eventually dropping below 40°F (4°C) in December, signaling the approach of winter.

Oregon’s weather patterns are also influenced by its coastal proximity to the Pacific Ocean. Moisture from the ocean plays a significant role in shaping the state’s climate, particularly during the winter months when rainfall is at its highest.

Despite these variations, Oregon remains known for its mild climate and moderate temperatures. The state’s geography and proximity to the ocean contribute to its unique weather patterns, which are an essential aspect of its natural charm.

In conclusion, Oregon’s average high temperature varies significantly across different regions due to factors such as altitude, latitude, and coastal proximity. Understanding these variations is crucial for appreciating the state’s diverse climate and seasonal patterns.

Average Low Temperature: 38°F (3°C)

The state of Oregon is known for its diverse and temperate climate.

Oregon’s weather patterns vary significantly from north to south due to its unique geography.

From coast to mountains to valleys, each region experiences different temperature and precipitation levels throughout the year.

Here is an overview of average low temperatures for Oregon by month

January

The coldest month in Oregon sees average lows ranging from 26°F (-3°C) in the north to 35°F (2°C) in the south.

February

February’s average low temperatures vary from 27°F (-3°C) in northern Oregon to 34°F (1°C) in southern areas.

March

As winter departs, average lows rise slightly to between 31°F (-1°C) and 39°F (4°C).

Oregon’s spring weather brings a gradual increase in temperature and precipitation.

April

Average low temperatures range from 34°F (1°C) to 40°F (4°C), marking the beginning of warmer days.

May

With average lows between 36°F (2°C) and 43°F (6°C), Oregon’s weather starts feeling more like springtime.

Sumer is a pleasant season in Oregon, with mild temperatures and moderate precipitation.

June

Average low temperatures range from 45°F (7°C) to 50°F (10°C), indicating warm summer days ahead.

July

The hottest month in Oregon sees average lows between 46°F (8°C) and 52°F (11°C).

Oregon’s autumn is a transition period, with temperatures gradually decreasing as winter approaches.

August

Average low temperatures range from 47°F (8°C) to 53°F (12°C), still relatively mild.

September

The beginning of autumn brings average lows between 42°F (6°C) and 48°F (9°C).

The winter season returns with cold temperatures, but with varying intensity across the state.

October

Average low temperatures range from 38°F (3°C) to 44°F (7°C), marking a decrease in temperature.

November

As winter sets in, average lows drop to between 35°F (2°C) and 41°F (5°C).

Oregon’s diverse geography leads to unique weather patterns that vary across the state. From coastal areas to mountains and valleys, temperatures and precipitation levels change with each region.

Precipitation: 4.5 inches (11.4 cm)

Precipitation is a vital aspect of weather that affects various parts of the world, including Oregon. Precipitation occurs when water vapor in the atmosphere condenses and falls to the ground in different forms, such as rain, snow, sleet, or hail.

Oregon’s precipitation pattern varies significantly from north to south due to its unique geography. The state’s coastal areas receive a high amount of rainfall throughout the year, with some areas receiving over 100 inches (254 cm) of precipitation annually.

The Columbia River Gorge, which runs through western Oregon, is another region that experiences significant precipitation. This area receives heavy rainfall during the winter months, often in the form of snow or freezing rain.

Central and eastern Oregon are generally drier than the western part of the state, with some areas receiving less than 20 inches (51 cm) of precipitation annually.

The summer months typically bring dry conditions to most parts of Oregon, while winter brings significant precipitation due to the frequent arrival of storms from the Pacific Ocean.

Average annual precipitation in different cities across Oregon varies as follows:

Portland: approximately 37 inches (94 cm)

Eugene: around 46 inches (117 cm)

Medford: about 21 inches (53 cm)

Bend: roughly 17 inches (43 cm)

Grants Pass: approximately 67 inches (171 cm)

The Oregon Weather by Month table below provides a detailed breakdown of precipitation patterns throughout the year in different parts of the state:

Month-by-Month Precipitation Patterns in Oregon

Portland

Jan: 5.7 inches (14.5 cm)

Feb: 3.9 inches (10 cm)

Mar: 2.8 inches (7.1 cm)

Apr: 1.6 inches (4.1 cm)

May: 0.8 inches (2.1 cm)

Jun: 0.3 inches (0.8 cm)

Jul: 0.2 inches (0.5 cm)

Aug: 0.4 inches (1 cm)

Sep: 0.7 inches (1.8 cm)

Nov: 3.2 inches (8.1 cm)

Dec: 5.3 inches (13.5 cm)

Eugene

Jan: 7.4 inches (18.8 cm)

Feb: 5.9 inches (15 cm)

Mar: 4.4 inches (11.2 cm)

Apr: 3.1 inches (7.9 cm)

May: 2.1 inches (5.3 cm)

Jun: 0.8 inches (2.1 cm)

Jul: 0.4 inches (1 cm)

Aug: 0.6 inches (1.5 cm)

Sep: 1.2 inches (3 cm)

Nov: 4.6 inches (11.7 cm)

Dec: 8.1 inches (20.5 cm)

Medford

Jan: 3.4 inches (8.6 cm)

Feb: 2.9 inches (7.4 cm)

Mar: 2.4 inches (6.1 cm)

Apr: 1.5 inches (3.8 cm)

May: 0.8 inches (2.1 cm)

Jun: 0.2 inches (0.5 cm)

Jul: 0.1 inches (0.3 cm)

Aug: 0.2 inches (0.5 cm)

Sep: 0.4 inches (1 cm)

Nov: 2.7 inches (6.9 cm)

Dec: 4.2 inches (10.7 cm)

Bend

Jan: 2.5 inches (6.4 cm)

Feb: 1.8 inches (4.6 cm)

Mar: 1.4 inches (3.6 cm)

Apr: 0.9 inches (2.3 cm)

May: 0.5 inches (1.3 cm)

Jun: 0.1 inches (0.3 cm)

Jul: 0.1 inches (0.3 cm)

Aug: 0.2 inches (0.5 cm)

Sep: 0.4 inches (1 cm)

Nov: 2.3 inches (5.8 cm)

Dec: 3.6 inches (9.1 cm)

Grants Pass

Jan: 7.6 inches (19.3 cm)

Feb: 6.4 inches (16.3 cm)

Mar: 5.2 inches (13.2 cm)

Apr: 4.1 inches (10.4 cm)

May: 2.9 inches (7.4 cm)

Jun: 1.2 inches (3 cm)

Jul: 0.6 inches (1.5 cm)

Aug: 0.8 inches (2 cm)

Sep: 1.4 inches (3.6 cm)

Nov: 5.7 inches (14.5 cm)

Dec: 8.5 inches (21.6 cm)

March

Average High Temperature: 54°F (12°C)

Oregon is known for its mild and temperate climate, with a range of weather conditions throughout the year. The state’s coastal regions tend to be cooler than its inland areas, while its eastern part tends to experience more extreme temperature fluctuations due to its proximity to the high desert region.

Below is an overview of Oregon’s average temperatures by month:

January

• Average High Temperature: 47°F (8°C)
• Average Low Temperature: 34°F (1°C)

The winter months in Oregon are generally cool and wet, with January being the coolest month of the year. The average high temperature in January is around 47°F (8°C), while the average low temperature is around 34°F (1°C).

February

• Average High Temperature: 49°F (9°C)
• Average Low Temperature: 36°F (2°C)

February tends to be similar to January in terms of temperature, with an average high temperature of around 49°F (9°C) and an average low temperature of around 36°F (2°C).

March

• Average High Temperature: 53°F (12°C)
• Average Low Temperature: 40°F (4°C)

As spring begins to arrive in Oregon, the temperatures start to warm up. In March, the average high temperature is around 53°F (12°C), while the average low temperature is around 40°F (4°C).

April

• Average High Temperature: 57°F (14°C)
• Average Low Temperature: 45°F (7°C)

By April, the temperatures in Oregon are generally mild and pleasant. The average high temperature is around 57°F (14°C), while the average low temperature is around 45°F (7°C).

May

• Average High Temperature: 61°F (16°C)
• Average Low Temperature: 48°F (9°C)

As the spring season continues, the temperatures in Oregon continue to warm up. In May, the average high temperature is around 61°F (16°C), while the average low temperature is around 48°F (9°C).

June

• Average High Temperature: 66°F (19°C)
• Average Low Temperature: 50°F (10°C)

The summer months in Oregon are generally mild and pleasant, with June being the warmest month of the year. The average high temperature is around 66°F (19°C), while the average low temperature is around 50°F (10°C).

July

• Average High Temperature: 70°F (21°C)
• Average Low Temperature: 53°F (12°C)

July tends to be similar to June in terms of temperature, with an average high temperature of around 70°F (21°C) and an average low temperature of around 53°F (12°C).

August

• Average High Temperature: 72°F (22°C)
• Average Low Temperature: 55°F (13°C)

The late summer months in Oregon are generally warm and pleasant, with August being the warmest month of the year. The average high temperature is around 72°F (22°C), while the average low temperature is around 55°F (13°C).

September

• Average High Temperature: 68°F (20°C)
• Average Low Temperature: 50°F (10°C)

As the fall season begins in Oregon, the temperatures start to cool down. In September, the average high temperature is around 68°F (20°C), while the average low temperature is around 50°F (10°C).

October

• Average High Temperature: 58°F (14°C)
• Average Low Temperature: 42°F (6°C)

The fall months in Oregon are generally mild and cool, with October being the coolest month of the year. The average high temperature is around 58°F (14°C), while the average low temperature is around 42°F (6°C).

November

• Average High Temperature: 50°F (10°C)
• Average Low Temperature: 38°F (3°C)

November tends to be similar to October in terms of temperature, with an average high temperature of around 50°F (10°C) and an average low temperature of around 38°F (3°C).

December

• Average High Temperature: 46°F (8°C)
• Average Low Temperature: 34°F (1°C)

The winter months in Oregon are generally cool and wet, with December being the coolest month of the year. The average high temperature is around 46°F (8°C), while the average low temperature is around 34°F (1°C).

Average Low Temperature: 42°F (6°C)

Oregon is known for its diverse climate, which varies greatly depending on the month and region. When it comes to average low temperatures, Oregon has a range that can be quite surprising.

From December to February, the average low temperature in many parts of Oregon drops below freezing, with some areas seeing lows as low as 25°F (-4°C) or even colder. This is due to the state’s proximity to the Pacific Ocean, which brings cold air from Alaska and Canada during the winter months.

However, come March and April, the temperature begins to rise, with average lows reaching into the mid-30s to low 40s (2-6°C). This marks a significant shift towards milder weather as spring arrives in Oregon.

By May and June, the state experiences a warm-up, with average lows in the upper 40s to low 50s (7-11°C). This is followed by a cool-down in July and August, when average lows drop back into the mid-40s (7-9°C).

September and October bring a slight warming trend again, with average lows reaching the upper 40s to lower 50s (7-11°C), before the cold winter months set in once more.

In terms of regional variations, Oregon’s coastal areas tend to be cooler than inland regions. For example, Coos Bay on the southern coast sees average lows ranging from 38°F (3°C) in December and January to 48°F (9°C) in July and August.

On the other hand, inland cities like Pendleton and The Dalles experience colder winters and warmer summers than coastal areas. Pendleton’s average low temperature ranges from 24°F (-4°C) in December and January to 52°F (11°C) in July and August.

The mountains of Oregon receive significant snowfall during the winter months, with average lows often dropping below 0°F (-18°C). Mount Hood, for instance, sees an average low temperature of 14.5°F (-9.7°C) in January and February.

Precipitation: 4.1 inches (10.4 cm)

Precipitation

The total amount of rainfall received at a location is called precipitation. In Oregon, the average annual precipitation varies across different regions, with some areas receiving significantly more rain than others.

Oregon Weather by Month

January

• Average temperature: 38°F (3.9°C)
• Total precipitation: 6.1 inches (15.5 cm)
• Snowfall: Up to 0.4 inches (10 mm) in some areas

February

• Average temperature: 40°F (4.4°C)
• Total precipitation: 5.7 inches (14.5 cm)
• Snowfall: Up to 0.3 inches (7.6 mm) in some areas

March

• Average temperature: 45°F (7.2°C)
• Total precipitation: 5.4 inches (13.7 cm)
• Snowfall: Up to 0.2 inches (5 mm) in some areas

April

• Average temperature: 50°F (10°C)
• Total precipitation: 4.1 inches (10.4 cm)
• Snowfall: Rarely occurs

May

• Average temperature: 54°F (12.2°C)
• Total precipitation: 3.8 inches (9.7 cm)
• Snowfall: Rarely occurs

June

• Average temperature: 62°F (16.7°C)
• Total precipitation: 2.6 inches (6.6 cm)
• Snowfall: Rarely occurs

July

• Average temperature: 65°F (18.3°C)
• Total precipitation: 1.7 inches (4.3 cm)
• Snowfall: Rarely occurs

August

• Average temperature: 64°F (17.8°C)
• Total precipitation: 2.3 inches (5.8 cm)
• Snowfall: Rarely occurs

September

• Average temperature: 58°F (14.4°C)
• Total precipitation: 3.5 inches (8.9 cm)
• Snowfall: Rarely occurs

October

• Average temperature: 48°F (8.9°C)
• Total precipitation: 4.7 inches (11.9 cm)
• Snowfall: Up to 0.2 inches (5 mm) in some areas

November

• Average temperature: 42°F (5.6°C)
• Total precipitation: 6.3 inches (16 cm)
• Snowfall: Up to 0.4 inches (10 mm) in some areas

December

• Average temperature: 38°F (3.9°C)
• Total precipitation: 7.1 inches (18 cm)
• Snowfall: Up to 0.5 inches (13 mm) in some areas

April

Average High Temperature: 59°F (15°C)

The state of Oregon is known for its mild climate

, with average temperatures varying by season and region. The Average High Temperature throughout the year is 59°F (15°C), but this can range from a chilly 45°F (7°C) in winter to a warm 77°F (25°C) in summer.

Oregon Weather by Month

• January: This month typically brings the winter low, with an average high of 48°F (9°C), making it one of the cooler months in Oregon. Average precipitation is around 6-8 inches, mostly in the form of rain.
• February: The second winter month sees a slight increase in temperature to 49°F (9°C) as an average high. Expect some sunshine but still expect rain, with averages ranging between 5-7 inches per month.
• March: As spring approaches, the Average High Temperature increases to 54°F (12°C), and precipitation decreases slightly, averaging around 4-6 inches.
• April: Temperatures continue to rise with an average high of 58°F (14°C) as spring fully arrives. This is one of the drier months in Oregon with only about 2-3 inches of precipitation.
• May: With warmer temperatures, the Average High Temperature reaches 63°F (17°C), and Oregon starts to experience its first dry spells after a few wetter spring months. Expect some sunshine but still around 4-5 inches of average precipitation.
• June: This marks the beginning of summer in Oregon, with an Average High Temperature of 69°F (21°C). Though it’s not uncommon for temperatures to rise above 80°F (27°C) during heatwaves, averages remain relatively comfortable around 4-5 inches per month.
• July: Known as one of Oregon’s hottest summer months, July boasts an Average High Temperature of 72°F (22°C). Expect some sunny days but be prepared for the occasional heatwave.
• August: As summer continues to reign supreme, the Average High Temperature is around 73°F (23°C) and still comfortable. Rainfall remains low, with averages ranging between 2-3 inches per month.
• September: Autumn starts taking over as temperatures decrease to an average high of 66°F (19°C). Expect some dry periods but don’t forget your rain gear yet, averaging around 4-5 inches per month.
• October: This autumnal month brings the Average High Temperature down to a cooler 59°F (15°C) and is one of Oregon’s wettest periods with averages ranging from 6-8 inches per month.
• November: The last autumn month before winter’s chill, November sees an average high of 51°F (11°C) as rain starts becoming more common again. Expect around 7-9 inches of precipitation for the month.
• December: As winter begins to set in, the Average High Temperature drops to a chilly 46°F (8°C), and Oregon’s precipitation levels increase to an average range of 6-10 inches per month. Be prepared for wet and possibly cold conditions.

Average Low Temperature: 47°F (8°C)

The state of Oregon is known for its mild climate, with temperatures varying depending on the time of year. The average low temperature throughout the state ranges from around 35°F (2°C) in the winter months to over 55°F (13°C) during the summer.

Winter months, which typically span from December to February, are characterized by cooler temperatures and occasional snowfall. In areas such as Portland, the average low temperature during this time is around 40°F (4°C), while in eastern Oregon, temperatures can drop below freezing, with an average low of 25°F (-4°C).

As spring begins to take hold, usually around March and April, temperatures start to rise. In western Oregon, the average low temperature reaches around 45°F (7°C), while in eastern Oregon it’s still quite cool at around 35°F (2°C).

Spring is also a time of significant precipitation, with most areas receiving a substantial amount of rainfall during these months.

Summer months, from June to August, are the warmest and driest times of year in Oregon. During this period, temperatures can reach into the mid-80s (29°C) in western Oregon, while eastern Oregon sees highs in the upper 70s to low 80s (26-27°C). Average lows range from around 55°F (13°C) in coastal areas to over 65°F (18°C) in inland regions.

Autumn, spanning from September to November, is characterized by a gradual cooling trend. In western Oregon, the average low temperature drops back down to around 50°F (10°C), while eastern Oregon sees lows in the mid-to-upper 40s (7-9°C). Precipitation picks up during these months as well, with most areas experiencing a significant amount of rainfall.

Oregon’s coastal regions tend to be cooler and more humid than inland areas due to their proximity to the Pacific Ocean. The state’s mountainous regions can also experience cooler temperatures and heavier snowfall than lower-lying areas.

Precipitation: 3.6 inches (9.1 cm)

Precipitation in Oregon is influenced by its location within the Pacific Northwest region and its varying climate zones. The state’s coastal areas are generally mild with moderate precipitation throughout the year, while the eastern high desert regions experience a more arid climate with less precipitation.

The majority of Oregon’s annual rainfall occurs between October and March, with December being the wettest month on average. During this period, the prevailing westerly winds bring moisture from the Pacific Ocean to the state, resulting in significant rainfall amounts along the coast and in western valleys.

In contrast, the dry season typically spans from June to September, with July being the driest month on average. During this time, high-pressure systems dominate the weather patterns, bringing clear skies and low precipitation to most of the state.

However, there are regional variations within Oregon that can significantly affect precipitation levels. The Cascade Range acts as a barrier to westerly winds, resulting in orographic lift and increased precipitation on the western slopes. This is particularly evident in the Columbia River Gorge, where snowpack can be significant during the winter months.

The eastern high desert regions of Oregon receive less precipitation than the rest of the state due to their location in a rain shadow zone. These areas are influenced by dry air from the Great Basin and typically experience limited rainfall throughout the year, with an average annual total below 12 inches (30 cm).

Temperature is also an important factor in determining Oregon’s precipitation patterns. As temperatures decrease with increasing elevation, snowfall becomes more common at higher elevations, particularly above 4,000 feet (1,200 meters). This can lead to significant snowpack accumulation during the winter months and contribute to the state’s overall water supply.

The unique combination of atmospheric conditions and regional geography within Oregon contributes to its diverse precipitation patterns. Understanding these factors is essential for predicting weather events and managing the state’s resources effectively.

May

Average High Temperature: 64°F (18°C)

The state of Oregon is known for its temperate climate, with average high temperatures varying depending on the month and region. In general, Oregon’s weather is characterized by mild winters and cool summers.

Average High Temperature: The average high temperature in Oregon ranges from 46°F (8°C) in January to 84°F (29°C) in July, with the warmest temperatures typically occurring in the eastern part of the state. However, it’s worth noting that these temperatures are not always reached, especially in the coastal regions where the Pacific Ocean has a moderating effect on the climate.

Oregon Weather by Month

January: This is one of the coolest months in Oregon, with average high temperatures ranging from 46°F (8°C) to 52°F (11°C). It’s also one of the wettest months, with an average of 17 rainy days throughout the state.

February: The weather in February is not much different from January, with average high temperatures ranging from 48°F (9°C) to 55°F (13°C). This month sees slightly less rainfall than January, but it’s still a relatively wet and cool time of year.

March: Spring starts to arrive in Oregon during March, with average high temperatures warming up to 58°F (14°C) along the coast and 65°F (18°C) inland. This is also one of the driest months, with an average of 12 rainy days statewide.

April: April is another relatively dry month in Oregon, with average high temperatures ranging from 61°F (16°C) to 68°F (20°C). The weather is generally mild and pleasant during this time, making it a great month to get outdoors and enjoy the state’s natural beauty.

May: As spring gives way to summer in May, the average high temperature in Oregon warms up to 67°F (19°C) along the coast and 75°F (24°C) inland. This is one of the sunniest months of the year, with an average of 220 sunny days statewide.

June: June is a warm and dry month in Oregon, with average high temperatures ranging from 73°F (23°C) to 82°F (28°C). The weather is perfect for outdoor activities like hiking, biking, and swimming.

July: July is usually the hottest month of the year in Oregon, with average high temperatures reaching up to 84°F (29°C) in some areas. However, the coastal regions tend to remain cooler, with temperatures rarely exceeding 70°F (21°C).

August: August is another warm and dry month in Oregon, with average high temperatures ranging from 75°F (24°C) to 83°F (28°C). The weather is still perfect for outdoor activities, but the temperature can start to drop slightly as summer gives way to autumn.

September: As fall arrives in Oregon during September, the average high temperature cools down to 72°F (22°C) along the coast and 78°F (26°C) inland. This is a great time of year for outdoor activities like hiking, biking, and apple picking.

October: October is a relatively cool month in Oregon, with average high temperatures ranging from 59°F (15°C) to 67°F (19°C). The weather can be quite rainy during this time, especially in the coastal regions.

November: This is one of the coolest months in Oregon, with average high temperatures ranging from 51°F (11°C) to 58°F (14°C). It’s also one of the wettest months, with an average of 19 rainy days statewide.

December: December is the coolest month of the year in Oregon, with average high temperatures ranging from 46°F (8°C) to 52°F (11°C). The weather can be quite chilly during this time, especially inland where temperatures tend to drop below freezing at night.

Average Low Temperature: 51°F (11°C)

The state of Oregon is known for its diverse climate and geography, with varying temperatures throughout the year. The average low temperature in Oregon can range from chilly to mild, depending on the month and location within the state.

For instance, during the winter months (December, January, and February), the average low temperature in coastal areas such as Cannon Beach and Seaside typically ranges from 38°F to 42°F (3°C to 6°C). In contrast, inland locations like Portland experience an average low of around 35°F to 40°F (2°C to 4°C) during this time.

As the seasons transition into spring (March to May), temperatures gradually rise. Coastal areas like Newport and Coos Bay see average lows ranging from 42°F to 48°F (6°C to 9°C), while inland locations like Bend experience a higher average low of around 35°F to 45°F (2°C to 7°C).

During the summer months (June to August), temperatures in Oregon tend to be warmer, with coastal areas reaching average lows of around 50°F to 56°F (10°C to 13°C). Inland locations like Pendleton and La Grande experience an even higher average low of approximately 55°F to 62°F (13°C to 17°C).

Autumn brings a return to milder temperatures, with average lows in coastal areas ranging from 45°F to 52°F (7°C to 11°C) and inland locations experiencing an average low of around 40°F to 50°F (4°C to 10°C). This decrease in temperature is typical for the state’s cooler climate during this time.

Portland, being the largest city in Oregon, experiences a similar variation in temperatures throughout the year. In winter, its average low temperature is approximately 35°F to 40°F (2°C to 4°C), while in summer, it ranges from 50°F to 56°F (10°C to 13°C). Spring and autumn temperatures are relatively mild, with an average low of around 42°F to 48°F (6°C to 9°C) during these periods.

The geographical differences within Oregon contribute to varying climate conditions. The coastal region tends to be cooler, especially in winter, whereas the inland areas experience warmer temperatures due to their higher elevation and distance from the moderating influence of the ocean.

Precipitation: 2.4 inches (6.1 cm)

Precipitation is an essential component of the Earth’s water cycle and plays a crucial role in shaping our climate. In Oregon, precipitation patterns vary greatly throughout the year, influenced by the state’s location in the Pacific Northwest, where cold ocean currents meet warm air from the equator.

During the summer months, typically June to August, Oregon experiences its wettest season due to the North American monsoon and the Intertropical Convergence Zone (ITCZ). The ITCZ brings tropical moisture from the Gulf of California, resulting in heavy rainfall along the coast, with some areas receiving as much as 10 inches (25 cm) per month.

The winter months, December to February, are the driest and coldest time of year. Precipitation is scarce during this period, with some interior areas receiving less than an inch (2.5 cm) per month. The cold air masses that dominate the region during this time bring clear skies and low humidity.

Spring, March to May, and fall, September to November, are transitional seasons in Oregon, with precipitation gradually increasing or decreasing between these periods. In general, spring is a relatively wet season, while autumn can be quite dry, particularly in the western parts of the state.

The statewide average annual precipitation in Oregon is around 30 inches (76 cm), with some areas receiving significantly more rain due to their coastal proximity and elevation. The state’s mountainous regions receive up to twice as much precipitation as the lower-lying areas along the coast, resulting in diverse ecosystems and climates within a relatively small geographic area.

Overall, Oregon’s precipitation patterns reflect its unique geography and climate characteristics. Understanding these patterns is essential for predicting weather events, managing water resources, and appreciating the region’s rich natural diversity.

June

Average High Temperature: 71°F (22°C)

Oregon’s climate varies significantly from north to south, but overall, it experiences a mild oceanic climate with high levels of rainfall throughout the year.

The state’s average high temperature is around 71°F (22°C), which makes it an attractive destination for tourists seeking cooler temperatures during the summer months.

Summer in Oregon typically starts in June and lasts until August, with July being the warmest month with an average high temperature of around 77°F (25°C).

During this time, temperatures can sometimes reach the mid-80s to low 90s (29-32°C), especially in the southeastern part of the state.

The fall season begins in September and continues until November, with October being the most pleasant month with mild temperatures ranging from 55°F (13°C) to 65°F (18°C).

Winter in Oregon is characterized by cooler temperatures, with the lowest average high temperature occurring in January at around 47°F (8°C).

The spring season starts in March and continues until May, with April being a great time to visit as temperatures are mild and rainfall is relatively low.

The northern part of the state tends to be cooler than the southern region, especially during the winter months, while the southeastern area experiences more extreme temperature fluctuations throughout the year.

It’s worth noting that Oregon’s weather can be quite unpredictable, with sudden changes in temperature and precipitation patterns not uncommon.

Cities like Portland tend to experience more overcast days than other parts of the state, whereas areas near the coast enjoy milder temperatures due to the moderating influence of the Pacific Ocean.

Average Low Temperature: 55°F (13°C)

Oregon’s weather varies greatly depending on the time of year, with different regions experiencing distinct temperature and precipitation patterns throughout the seasons.

During winter months (December to February), the average low temperature in Oregon is 35°F (2°C)

, which can drop significantly in the coastal areas and mountainous regions due to the influence of cold air from the Pacific Ocean and nearby high terrain, respectively. In these areas, temperatures can drop as low as 25°F (-4°C) or even lower.

As you move inland and to the south, the average low temperature during winter months increases. For example, in cities like Eugene and Medford, the average low temperature is around 40°F (4°C)

, while in areas like Salem and Portland, it’s closer to 38°F (3°C). However, even in these warmer regions, nighttime temperatures can still drop significantly.

Spring (March to May) brings a gradual warming trend throughout Oregon. The average low temperature during this time period ranges from the mid-

30s (-1°C) in coastal areas to the mid-50s (10°C) in southern regions like Medford and Klamath Falls.

Summer months (June to August) are characterized by a warm, dry climate across most of Oregon. The average high temperature during this time period typically ranges from the 70s (21-26°C) in coastal areas to the 80s (27-32°C) in inland regions like Eugene and Medford.

Fall, which spans from September to November, brings a return to cooler temperatures across Oregon. The average low temperature during this time period ranges from around 40°F (4°C) in coastal areas to the mid-

50s (10-13°C) in southern regions.

In terms of precipitation, winter months tend to be wettest due to the prevailing westerly winds and the influence of cold air from the Pacific Ocean. Coastal areas receive the most precipitation during this time period, with some locations receiving over 30 inches (76 cm) of rain per month.

In conclusion, Oregon’s weather varies greatly depending on the time of year, location, and elevation. Understanding these variations is essential for planning outdoor activities, planting crops, or simply enjoying the state’s unique climate.

Precipitation: 0.7 inches (1.8 cm)

Precipitation plays a crucial role in shaping the weather patterns and climate of Oregon. The state’s precipitation is influenced by its proximity to the Pacific Ocean, with the prevailing westerly winds bringing moisture from the ocean to the land.

On average, Oregon receives an annual precipitation of around 30 inches (76 cm), with the western part of the state receiving more rainfall than the eastern part. The coastal regions receive significant amounts of rainfall due to the prevailing westerly winds and the orographic effect caused by the mountain ranges.

The winter months are typically the wettest, with the most significant precipitation occurring between December and February. During this time, Oregon experiences a mild winter climate, with temperatures ranging from 40°F (4°C) in the coastal regions to 30°F (-1°C) in the eastern parts of the state.

The spring months bring a gradual decrease in rainfall, but it’s still a wet season with significant precipitation. By May, the average precipitation is around 2-3 inches (5-7.6 cm), which allows the vegetation to grow rapidly and contribute to the lush green landscapes that Oregon is famous for.

Summer brings dry conditions, especially in eastern Oregon where temperatures can reach as high as 90°F (32°C). The western part of the state experiences a more moderate climate with average highs around 70-80°F (21-27°C).

The fall season marks a return to wetter conditions, with most areas experiencing an increase in precipitation. This is due to the influx of moisture from the Pacific Ocean and the movement of high-pressure systems that bring rain.

Oregon’s weather patterns are further influenced by its geographical features. The Cascade Range acts as a barrier to the prevailing westerly winds, forcing them to rise and cool, resulting in precipitation on the western side of the mountains. This creates a rainy climate in the coastal regions, with areas such as Cannon Beach and Ecola State Park experiencing an annual rainfall of over 60 inches (152 cm).

The weather patterns also vary across different parts of Oregon. The Willamette Valley experiences a more temperate climate due to its location between two mountain ranges. This creates a rain shadow effect, resulting in drier conditions compared to the coastal regions.

July

Average High Temperature: 76°F (24°C)

The state of Oregon is known for its diverse range of climates and weather conditions, due to its unique geography and coastal location. The temperature varies greatly from north to south, with the western part of the state typically being cooler than the eastern regions.

Average high temperatures in Oregon can be broken down by month as follows: January, which is one of the coldest months, has an average high temperature of 47°F (8°C). This temperature gradually increases throughout the spring months of February and March, with average highs reaching around 52-55°F (11-13°C).

April sees a notable rise in temperatures, with the average high temperature reaching around 60-62°F (16-17°C). As summer begins in May, temperatures continue to rise, with average highs ranging from 65-70°F (18-21°C) throughout the month.

In June, one of the warmest months of the year, average highs can reach up to 75-78°F (24-25.5°C). This is followed by a slight decrease in temperature during July, with averages ranging from 72-75°F (22.2-23.9°C).

The remaining summer months see temperatures continue to fluctuate but generally remain at relatively warm levels, with August having an average high of around 78-82°F (25.5-27.8°C). September marks the beginning of autumn and sees a decrease in temperatures, with averages ranging from 65-70°F (18-21°C).

As winter approaches in October, the temperature drops, but not as significantly as during January. November and December see average highs around 52-55°F (11-13°C) respectively.

It’s essential to note that these are general temperature averages and can vary depending on specific locations within Oregon. Coastal areas tend to be cooler than inland regions, while the eastern part of the state tends to experience warmer temperatures due to its dry climate.

The unique weather patterns in Oregon make it an attractive destination for those who enjoy varied climates and geography. From mild winters to cool summers, this region provides a suitable environment for various activities throughout the year.

Average Low Temperature: 58°F (14°C)

Oregon’s diverse geography and proximity to the Pacific Ocean create a unique climate that varies by season. The state’s weather patterns are influenced by its coastal location, mountain ranges, and varying elevation.

Winter (December to February): This is the coolest and wettest time of year in Oregon. During these months, you can expect

• Average Low Temperature : 40°F (4°C) near the coast, rising to 32°F (0°C) in eastern Oregon.
• Precipitation: The majority of the state’s annual rainfall occurs during these months, with some areas receiving over 10 inches (25 cm) of rain per month.

Spring (March to May): Spring brings mild temperatures and increasing daylight hours in Oregon. The average low temperature warms up

• Near the coast: from 40°F (4°C) in March to 50°F (10°C) in May.
• Inland areas: from 32°F (0°C) in March to 50°F (10°C) in May.

Summer (June to August): This is the warmest time of year in Oregon, with temperatures gradually increasing throughout the season. The average high temperature

• Near the coast: reaches 72°F (22°C) in June and July, then cools slightly to 68°F (20°C) in August.
• Inland areas: can reach 85°F (29°C) or higher during heatwaves, but average highs typically range from 80°F (27°C) to 84°F (29°C).

Fall (September to November): Autumn brings a return to cooler temperatures and reduced daylight hours in Oregon. The average low temperature

• Near the coast: drops from 55°F (13°C) in September to 45°F (7°C) in November.
• Inland areas: can drop as low as 30°F (-1°C) during cold snaps, but average lows typically range from 35°F (2°C) to 40°F (4°C).

These temperature fluctuations are influenced by various factors, including

• The Pacific Ocean’s moderating effect on coastal temperatures.
• The influence of the Cascades mountain range, which creates a rain shadow effect and leads to drier conditions on the eastern side of the state.
• Variations in elevation, with higher elevations experiencing colder temperatures and more precipitation than lower-lying areas.

Oregon’s diverse weather patterns make it an attractive destination for outdoor enthusiasts and nature lovers throughout the year.

Precipitation: 0.5 inches (1.3 cm)

Precipitation in Oregon varies significantly throughout the year, with most areas receiving a moderate amount of rainfall during the winter months. The state’s coastal regions tend to receive more precipitation than inland areas, while the eastern part of the state is generally drier. In terms of specific numbers, Oregon averages around 31-45 inches (79-114 cm) of precipitation per year, with the highest amounts occurring in the coastal mountains.

The winter months, from December to February, are typically the wettest time of the year in Oregon, with an average of 6-8 inches (15-20 cm) of precipitation. This is due to the prevailing westerly winds that bring moist air from the Pacific Ocean, resulting in heavy rainfall and snowfall in some areas. The coastal regions of Oregon tend to receive more precipitation during this time period, with some areas receiving over 100 inches (254 cm) of rain per year.

In contrast, the summer months, from June to August, are relatively dry, with an average of only 0.2-1 inch (5-25 mm) of precipitation. The eastern part of the state is particularly dry during this time period, with some areas receiving as little as 6 inches (15 cm) of rain per year.

The spring and fall months, from March to May and September to November respectively, tend to be relatively wetter than the summer months but drier than the winter months. This is due to the prevailing westerly winds continuing to bring moist air from the Pacific Ocean during these time periods.

It’s worth noting that Oregon’s precipitation patterns can vary significantly from year to year, with some years being particularly wet or dry. It’s also worth noting that while precipitation can be heavy in some areas, it can be light and variable in others, making it essential for residents to stay up-to-date with weather forecasts and warnings.

Overall, Oregon’s precipitation patterns are characterized by high levels of rainfall during the winter months, moderate levels of rainfall during the spring and fall months, and relatively dry conditions during the summer months. The state’s coastal regions tend to receive more precipitation than inland areas, while the eastern part of the state is generally drier.

As for weather by month, here are some general observations: January is typically one of the wettest months in Oregon, with an average high temperature of 48°F (9°C) and an average low temperature of 39°F (4°C). February is also quite rainy, with an average high temperature of 50°F (10°C) and an average low temperature of 41°F (5°C).

In contrast, July is typically the warmest month in Oregon, with an average high temperature of 73°F (23°C) and an average low temperature of 53°F (12°C). August is also quite warm, with an average high temperature of 74°F (23°C) and an average low temperature of 54°F (12°C).

September is a transitional month in Oregon, with the weather starting to cool down after the hot summer months. The average high temperature in September is around 67°F (19°C), while the average low temperature is around 49°F (9°C). October is also quite mild, with an average high temperature of 60°F (16°C) and an average low temperature of 44°F (7°C).

November is typically a wet month in Oregon, with an average high temperature of 52°F (11°C) and an average low temperature of 42°F (6°C). December is also quite rainy, with an average high temperature of 48°F (9°C) and an average low temperature of 39°F (4°C).

August

Average High Temperature: 77°F (25°C)

The state of Oregon in the United States is known for its diverse climate, which varies greatly depending on the season and location within the state. The average high temperature in different parts of the year is an essential aspect to understand when planning a trip or move to Oregon.

In general, the temperatures in Oregon are mild during the summer months but can drop significantly during the winter months due to its proximity to the Pacific Ocean. Here’s an overview of what you can expect regarding average high temperatures and weather conditions throughout the year:

January

This is one of the coldest months, with an average high temperature of around 48°F (9°C) in the northern parts of Oregon and slightly higher in the southern regions.

February

The average high temperatures remain relatively low compared to other months, ranging from 49°F (9°C) in the north to about 51°F (11°C) in the south. This period is known for its frequent rainfall throughout the state.

March

Spring starts showing up with increasing temperatures as the month progresses. On average, high temperatures are around 54°F (12°C) in the northern areas and slightly warmer towards the southern part of Oregon.

April

This month marks a significant increase in temperature, especially during the latter half. Highs often reach about 62°F (17°C) in the north and into the mid-60s (18°C) in the south.

May

This is when spring fully takes over with warmer temperatures throughout Oregon. Average highs range from the mid to high 70s Fahrenheit (23-25°C), making it an ideal time for outdoor activities like hiking or biking.

June

Summer officially starts this month, but temperatures are still relatively mild compared to some other parts of the country. The average high temperature is around 77°F (25°C) statewide, though it can vary depending on location and weather systems.

July

This month sees consistent warm days across Oregon with an average high of about 84°F (29°C). It’s a peak tourist season due to its pleasant climate and outdoor activities.

August

Similar to July, August continues with the warmth of summer, though temperatures can slightly drop by a couple of degrees. Highs typically reach the mid-80s Fahrenheit (28-30°C).

September

As autumn starts, temperatures begin to cool down gradually, but it’s still warm compared to the early part of the year. Average highs in September are around 75°F (24°C) throughout the state.

October

Temperatures continue their seasonal decrease as October begins. Highs average around 64°F (18°C), with the cooler days starting to arrive in Oregon.

November

This month marks a noticeable drop in temperature, especially towards the end of November when the average highs are usually around 51°F (11°C).

December

This is one of the coldest months, similar to January. Temperatures range from about 45°F (7°C) in the north to the mid-50s Fahrenheit (13-14°C) in the south.

The weather in Oregon can change significantly from year to year and even within different parts of the state. These temperatures provide a general overview but remember to check local forecasts for more accurate and up-to-date information when planning your stay or move to Oregon.

Average Low Temperature: 59°F (15°C)

Oregon’s climate varies greatly depending on the month and location within the state. The Pacific Northwest region, which includes Oregon, experiences a mild oceanic climate due to its proximity to the Pacific Ocean.

January is one of the coldest months in Oregon, with average low temperatures ranging from 24°F (-4°C) in the north to 35°F (2°C) in the south. The coastal regions tend to be cooler than inland areas during this time.

February is also quite chilly, with average low temperatures between 25°F (-4°C) and 36°F (2°C). It’s not uncommon for some parts of the state to experience light snowfall or frost during this month.

In March, the weather begins to warm up, with average low temperatures increasing to 32°F (0°C) in the north and 41°F (5°C) in the south. This marks a transition period from winter to spring in Oregon.

April is a lovely time of year in Oregon, with mild temperatures and fewer precipitation days. Average low temperatures range from 38°F (3°C) in the north to 48°F (9°C) in the south.

In May, the weather continues to improve, with average low temperatures increasing to 43°F (6°C) in the north and 54°F (12°C) in the south. This is a popular time for outdoor activities like hiking and biking.

June marks the beginning of summer in Oregon, with warm temperatures and long days. Average high temperatures range from 68°F (20°C) to 82°F (28°C), while average low temperatures remain relatively mild at around 50°F (10°C).

In July, one of the hottest months in Oregon, average high temperatures can reach up to 90°F (32°C) in some areas. Average low temperatures range from 53°F (12°C) in the north to 64°F (18°C) in the south.

August is also warm, with average high temperatures between 86°F (30°C) and 94°F (34°C). Average low temperatures remain around 55°F (13°C) and 66°F (19°C), respectively.

In September, the weather starts to cool down, with average high temperatures decreasing to 77°F (25°C) in the north and 86°F (30°C) in the south. Average low temperatures range from 49°F (9°C) to 61°F (16°C).

October is a lovely autumn month in Oregon, with mild temperatures and beautiful fall foliage. Average high temperatures range from 63°F (17°C) to 74°F (23°C), while average low temperatures remain around 45°F (7°C) and 56°F (13°C).

In November, the weather becomes cooler again, with average high temperatures between 55°F (13°C) and 65°F (18°C). Average low temperatures range from 38°F (3°C) to 50°F (10°C).

December is one of the coldest months in Oregon, with average high temperatures ranging from 46°F (8°C) in the north to 56°F (13°C) in the south. Average low temperatures can drop as low as 30°F (-1°C) in some areas.

Precipitation: 0.7 inches (1.8 cm)

Precipitation is a crucial aspect of Oregon’s climate, with varying amounts throughout the year. On average, precipitation ranges from 35 to 60 inches (89 to 152 cm) annually along the coast, while the eastern part of the state receives significantly less, around 15-20 inches (38-51 cm).

However, when it comes to Oregon Weather by Month, the coastal region experiences the highest levels of precipitation during the winter months. Typically, the months of December and January receive the most precipitation, with an average of over 12 inches (30 cm) each.

In contrast, June is usually the driest month along the coast, with only about 3-4 inches (7.6-10 cm) of precipitation. This pattern holds true for much of Oregon’s coastline, including popular destinations like Cannon Beach and Bandon.

Further inland, the amount of precipitation varies significantly from one region to another. In the Willamette Valley, which encompasses cities like Portland and Eugene, the average annual rainfall is around 40-50 inches (102-127 cm).

In Eastern Oregon, however, the dry season can last for several months, with some areas receiving as little as 5-10 inches (13-25 cm) of precipitation annually. This part of the state experiences a much more pronounced dry climate, with hot summers and cold winters.

Despite these regional variations, it’s worth noting that Oregon Weather by Month can be quite unpredictable. While certain patterns hold true for most years, extreme weather events like El Niño can significantly impact precipitation levels and other meteorological phenomena.

In recent years, the state has experienced significant droughts followed by heavy rainfall events, illustrating the complexity of Oregon’s climate. Understanding these fluctuations is crucial for agriculture, water management, and overall environmental planning within the region.

September

Average High Temperature: 73°F (23°C)

Oregon’s weather varies depending on the season, with different parts of the state experiencing unique temperature and precipitation patterns.

The average high temperature in Oregon is around 73°F (23°C) throughout the year, but temperatures can drop significantly at night or during winter months.

Spring, which runs from March to May, brings mild temperatures, with daytime highs ranging from the mid-50s to mid-60s Fahrenheit (13-18°C). As spring progresses, temperatures gradually warm up, reaching an average high of 68°F (20°C) in April and 70°F (21°C) in May.

Summer, which spans June to August, is characterized by warm and dry conditions. The average high temperature during this period reaches a peak of around 85°F (29°C), with occasional heatwaves pushing temperatures above 100°F (38°C).

Fall, or autumn, which occurs from September to November, brings cooler temperatures, with daytime highs ranging from the mid-50s to mid-60s Fahrenheit (13-18°C). The average high temperature in October is around 64°F (18°C), while November averages a high of 54°F (12°C).

Winter, which includes December, January, and February, brings cold temperatures, with daytime highs ranging from the mid-40s to mid-50s Fahrenheit (7-13°C). The average high temperature in January, the coldest month, is around 48°F (9°C), while February averages a high of 50°F (10°C).

Some parts of Oregon experience significantly colder temperatures than others, particularly in the eastern and northern regions. For example, Pendleton, located in northeastern Oregon, can drop to as low as -20°F (-29°C) during winter months.

Oregon’s coastal regions tend to have milder winters, with average high temperatures ranging from around 40°F (4°C) to 50°F (10°C). In contrast, inland areas like Bend and Prineville can experience freezing temperatures and below-average precipitation during winter.

Overall, Oregon’s weather is influenced by its unique geography and climate. Temperatures vary depending on the season, region, and elevation, making it essential for visitors to pack accordingly and be prepared for any conditions.

Average Low Temperature: 54°F (12°C)

Oregon is known for its diverse climate, which varies depending on the region and time of year. The state’s weather patterns are influenced by its proximity to the Pacific Ocean, as well as its mountainous terrain. To understand the typical temperatures in Oregon, it’s helpful to break down the state’s climate by month.

January is one of the coolest months in Oregon, with average low temperatures ranging from 26°F (-3°C) in the northern part of the state to around 42°F (6°C) in southern Oregon. The coastal regions tend to be cooler than inland areas, due to the moderating influence of the ocean.

In February, the temperature starts to rise slightly, with average low temperatures ranging from 28°F (-2°C) in northern Oregon to around 45°F (7°C) in southern Oregon. This is still a relatively cool time of year, but it marks the beginning of a gradual warming trend throughout the state.

March brings more significant warming, with average low temperatures increasing to between 34°F (1°C) and 50°F (10°C) across different regions of the state. This month often sees a mix of cool and warm days, as spring begins to take hold.

In April, Oregon’s temperature continues to rise, with average low temperatures ranging from 38°F (3°C) in northern parts of the state to around 55°F (13°C) in southern Oregon. The coastal regions tend to be cooler than inland areas, but overall, this is a time of rapid warming.

May is often one of the warmer months in Oregon, with average low temperatures ranging from 42°F (6°C) in northern parts of the state to around 60°F (16°C) in southern Oregon. This is also the start of the state’s dry season, as rainfall begins to decrease.

June marks the beginning of summer in Oregon, with warm temperatures and long days. Average low temperatures range from 48°F (9°C) in northern parts of the state to around 65°F (18°C) in southern Oregon. This is often a time of dry weather, but occasional heatwaves can occur.

In July and August, summer is in full swing, with average high temperatures sometimes reaching into the mid-80s (29-30°C). These months are also among the driest in the state, as the region experiences its longest stretch without significant rainfall.

September marks a return to slightly cooler temperatures, with average low temperatures ranging from 50°F (10°C) in northern parts of the state to around 65°F (18°C) in southern Oregon. This is also the start of the fall wet season, as rainfall begins to increase once again.

October sees continued cooling, with average low temperatures ranging from 45°F (7°C) in northern parts of the state to around 55°F (13°C) in southern Oregon. The coastal regions tend to be cooler than inland areas, but overall, this is a time of gradual cooling throughout the state.

November marks the return to winter-like temperatures, with average low temperatures ranging from 38°F (3°C) in northern parts of the state to around 50°F (10°C) in southern Oregon. This is also one of the wettest months in the state, as rainfall increases once again.

December is one of the coolest and wettest months in Oregon, with average low temperatures ranging from 33°F (0°C) in northern parts of the state to around 46°F (8°C) in southern Oregon. This is also a time of significant cloud cover and occasional precipitation events throughout the state.

Overall, Oregon’s temperature varies greatly depending on the region and time of year. From cool winter temperatures to warm summer highs, there are many factors to consider when planning a trip or living in this beautiful Pacific Northwest state.

Precipitation: 1.6 inches (4 cm)

The state of Oregon experiences a diverse range of weather conditions throughout the year, with different parts of the state receiving varying amounts of precipitation. One aspect to consider is the average monthly precipitation in Oregon, which can be quite high during certain months.

Average monthly precipitation levels vary greatly across the state, depending on the location and elevation. In general, the western part of Oregon receives more precipitation than the eastern part. This is due to its proximity to the Pacific Ocean, where moist air from the ocean brings a significant amount of moisture to the region.

The coastal regions of Oregon experience high levels of rainfall throughout the year, with some areas receiving over 60 inches (152 cm) annually. The coastal city of Seaside, for example, receives an average of around 62 inches (157 cm) per year. This is significantly higher than inland regions.

The mountains in Oregon also receive a considerable amount of precipitation each year. The Cascades mountain range, which stretches through central and eastern Oregon, receives heavy snowfall during the winter months and moderate rainfall throughout the rest of the year. Some areas of the mountains can receive over 100 inches (254 cm) per year.

By contrast, the desert regions of southeastern Oregon are quite dry and experience low levels of precipitation each year. This region typically receives around 12-15 inches (30-38 cm) annually, making it one of the driest parts of the state.

In terms of average monthly precipitation, here are some statistics for different parts of Oregon: January

, which is usually the wettest month in the western part of the state, receives around 17 inches (43 cm). The mountainous regions tend to peak during this month as well. June

, on the other hand, marks the start of a drier period for the entire state, with most areas receiving significantly less precipitation than they did in January.

Precipitation totals for Oregon’s major cities are: Salem receives approximately 37 inches (94 cm), Bend gets about 13 inches (33 cm) annually, and Eugene averages around 45 inches (114 cm). These figures serve as a general guideline of what to expect each year in these areas.

Average precipitation levels vary greatly across Oregon’s different regions. Coastal areas are the wettest, while desert regions tend to be quite dry. Understanding this pattern can help residents and visitors better prepare for the weather conditions throughout the state.

October

Average High Temperature: 63°F (17°C)

The state of Oregon is known for its temperate climate, with average high temperatures varying throughout the year. From January to December, each month brings unique weather patterns that contribute to Oregon’s overall climate.

January

This is one of the coolest months in Oregon, with an average high temperature of 47°F (8°C). The state experiences a significant amount of rainfall during this time, which helps maintain its lush green landscape. Overnight temperatures often drop below freezing.

February

February is another chilly month in Oregon, with an average high temperature of 49°F (9°C). While the days are getting longer, the rainfall continues to be a dominant feature of the state’s weather. This period sees a moderate amount of precipitation, with occasional snow showers in the mountains.

March

As spring begins to take hold, March brings a slight increase in temperature, with an average high of 52°F (11°C). The days are getting warmer and longer, allowing for more sunshine. Although it’s not uncommon for Oregon to experience rain showers, the state is slowly transitioning into a drier phase.

April

This month marks the beginning of spring in full swing, with an average high temperature of 56°F (13°C). The state experiences more sunshine and milder temperatures, but it’s not uncommon to see rainfall throughout April. Overnight temperatures remain relatively cool.

May

As the last remnants of spring fade away, May brings a gradual increase in temperature, with an average high of 60°F (16°C). The state is now experiencing more sunny days and warmer temperatures, but occasional rain showers can still be expected.

June

Summer has finally arrived in Oregon, with an average high temperature of 66°F (19°C). This month marks the beginning of a drier period in the state, with fewer rainfall events. The days are long and sunny, making it ideal for outdoor activities.

July

This is one of the warmest months in Oregon, with an average high temperature of 68°F (20°C). The state experiences its longest days of the year, allowing for plenty of sunshine. While summer showers can still occur, they are relatively rare during this time.

August

As summer begins to wane, August brings a slight decrease in temperature, with an average high of 67°F (19°C). The state continues to experience mild temperatures and fewer rainfall events, making it ideal for outdoor activities. However, occasional heatwaves can occur.

September

As autumn begins to take hold, September brings a gradual decrease in temperature, with an average high of 63°F (17°C). The state experiences fewer sunny days and more overcast conditions. While rainfall is less frequent, it’s not uncommon for Oregon to experience occasional showers.

October

This month marks the beginning of autumn in full swing, with an average high temperature of 58°F (14°C). The state experiences more overcast conditions and a moderate amount of rainfall. Overnight temperatures often drop below freezing, making it essential to prepare for winter.

November

As the last remnants of autumn fade away, November brings a significant decrease in temperature, with an average high of 49°F (9°C). The state experiences more rainfall events and fewer sunny days. Overnight temperatures often drop below freezing, making it essential to prepare for winter.

December

This is one of the coolest months in Oregon, with an average high temperature of 46°F (8°C). The state experiences a significant amount of rainfall and fewer sunny days. Overnight temperatures often drop below freezing, making it essential to prepare for winter.

Average Low Temperature: 49°F (9°C)

The state of Oregon is known for its mild climate, with average low temperatures varying throughout the year. In terms of temperature, one key factor to consider is the average low temperature, which is a measure of how cold it gets on any given night.

Oregon’s average low temperature in January, which is the coldest month of the year, is around 29°F (-2°C), while in July, the warmest month, it can be as high as 59°F (15°C). These temperatures give you a general idea of what to expect throughout the state.

When looking at Oregon’s average low temperature by month, January averages -2°C (28.6°F) while July averages 15°C (59°F). February averages -1°C (30.2°F), March averages 4.5°C (40.1°F), April averages 7°C (44.6°F), May averages 10.6°F (21.9°C) and June averages 12.3°F (22.8°C).

For those planning to visit or live in Oregon, it is worth considering that the state experiences a wet winter with mild temperatures. This climate can be beneficial for growing various crops throughout the year.

Oregon’s temperature also varies greatly depending on its geographic location. For example, coastal areas tend to be cooler than inland regions due to the moderating influence of the Pacific Ocean.

Precipitation: 3.4 inches (8.6 cm)

Precipitation in Oregon plays a crucial role in shaping the state’s weather patterns, with significant variations occurring throughout the year. On average, Oregon receives an annual rainfall of around 31-37 inches (79-94 cm), making it one of the wettest states in the country.

The majority of Oregon’s precipitation falls during the winter months, from December to March, with some areas receiving over half of their total yearly rainfall during this period. The coastal regions tend to receive more precipitation than inland areas, while the Cascade Range mountainous regions experience a significant amount due to orographic lift.

Summer months, June to August, typically bring relatively dry conditions to most parts of Oregon, with an average precipitation level of around 0.7-1.2 inches (1.8-3 cm). However, occasional summer storms can still lead to heavy rainfall and flash flooding in some areas.

September and October often see a brief reprieve from the wet winter conditions, while November marks the beginning of another active precipitation period, with most regions receiving increased rainfall during this time. The dry season’s return typically starts around April, though precipitation levels can still vary significantly depending on location within the state.

Oregon’s unique geography contributes to its diverse weather patterns, including a mix of coastal and continental influences. The state’s proximity to the Pacific Ocean means that it experiences a high level of marine influence, while its mountainous terrain leads to orographic effects that amplify precipitation in certain areas.

November

Average High Temperature: 54°F (12°C)

The Oregon weather is known for its mild climate, with average temperatures varying depending on the season. In terms of the state’s overall temperature profile, the Average High Temperature of 54°F (12°C) serves as a benchmark.

Breaking down the year into its various months provides insight into how weather conditions in Oregon fluctuate over time. Here is an overview of what to expect from month to month:

• January: This is one of the cooler months, with average high temperatures ranging between 47°F (8°C) and 54°F (12°C). It’s common for temperatures to drop significantly at night, even during warmer days.
• February: Similar to January, February experiences relatively mild temperatures, with highs averaging from 46°F (7°C) to 53°F (11.5°C). This month marks the beginning of a gradual warming trend as winter slowly transitions into spring.
• March: The Average High Temperature begins its steady climb toward warmer seasons, with highs ranging from 50°F (10°C) to 59°F (14.5°C). Nights can still be quite cool, but afternoons typically bring more pleasant conditions.
• April: As spring continues to advance, Oregon ‘s weather improves significantly, with highs averaging between 55°F (12°C) and 63°F (16.5°C). This is a great time to enjoy the state’s natural beauty without the peak summer heat.
• May: With temperatures continuing their upward trend, Average High Temperature for May often ranges from 58°F (13.5°C) to 67°F (18.5°C). It’s one of the most pleasant times in Oregon, with comfortable temperatures and fewer extreme weather events.
• June: As summer officially begins, Oregon ‘s high temperature reaches its peak, averaging between 64°F (17.5°C) and 72°F (22.2°C). June is also one of the wettest months in Oregon, with a significant portion of annual rainfall occurring during this period.
• July: July marks the warmest month in Oregon, with an average high temperature ranging from 67°F (18.5°C) to 76°F (24.4°C). Although it’s one of the warmer months, temperatures rarely become extremely hot during this time.
• August: The Average High Temperature for August often mirrors that of July, averaging between 66°F (17.5°C) and 75°F (23.8°C). This is a great time to enjoy outdoor activities without the peak summer heat.
• September: As summer transitions into autumn, temperatures begin to cool slightly, with highs ranging from 62°F (16.5°C) to 71°F (21.6°C). This month offers pleasant conditions for those who prefer milder weather.
• October: October experiences a significant decrease in temperature compared to summer months, with an average high of around 57°F (13.8°C) to 65°F (18.5°C). It’s one of the cooler months but still relatively mild.
• November: This month marks the beginning of the colder season, with temperatures averaging from 49°F (9.4°C) to 56°F (12.7°C). While it can be chilly at times, especially in the mornings and evenings, overall conditions remain relatively moderate.
• December: The Average High Temperature for December typically ranges from 46°F (7.5°C) to 53°F (11.5°C), continuing the trend of mild temperatures that Oregon is known for. However, nights can be quite cold during this month.
• In summary, Oregon

‘s weather varies throughout the year but generally remains moderate, with temperature fluctuations from month to month contributing to its overall climate profile.

Average Low Temperature: 43°F (6°C)

The state of Oregon is known for its diverse climate, which varies significantly from north to south. The state’s geography and oceanic influence contribute to a temperate climate with cool winters and mild summers.

Throughout the year, Oregon experiences four distinct seasons: spring, summer, autumn (or fall), and winter. Each season brings unique weather patterns that are shaped by the region’s coastal location and mountainous terrain.

Here is an overview of Oregon weather by month

• January: The coldest month of the year in Oregon, with average low temperatures ranging from 35°F (2°C) in the north to 43°F (6°C) in the south.
• February: Still quite chilly, with average lows between 36°F (2°C) and 45°F (7°C), depending on the location.
• March: Spring begins to arrive, with mild temperatures and occasional rain showers. Average lows range from 40°F (4°C) in the north to 50°F (10°C) in the south.
• April: A pleasant time of year in Oregon, with average highs often reaching the mid-60s (18°C) and lows ranging from 45°F (7°C) to 55°F (13°C).
• May: Spring is in full bloom, with mild temperatures and occasional rain showers. Average lows range from 50°F (10°C) in the north to 60°F (16°C) in the south.

In terms of precipitation, Oregon receives most of its rainfall during the winter months. The state’s coastal location means that it is exposed to moisture-laden air from the Pacific Ocean, resulting in significant precipitation levels throughout the year.

Here are some average monthly precipitation levels for various regions of Oregon

• Northwestern Oregon (Portland): 4-6 inches (10-15 cm) per month during winter months and 2-3 inches (5-7.5 cm) during spring and summer.

• Willamette Valley: 4-6 inches (10-15 cm) per month during winter months and 2-3 inches (5-7.5 cm) during spring and summer.

The mountains of Oregon receive significantly more precipitation than the coastal regions, with some areas receiving over 20 feet (6 meters) of snowfall annually.

Precipitation: 5.1 inches (13 cm)

Precipitation is one of the key aspects of Oregon’s climate, playing a crucial role in shaping the state’s weather patterns. The state experiences a moderate oceanic climate, characterized by high levels of rainfall and significant precipitation throughout the year.

The amount of precipitation varies across different regions within Oregon. In the western part of the state, including cities such as Portland and Eugene, the annual precipitation averages around 30-40 inches (76-102 cm), with most areas receiving between 20-50 inches (51-127 cm) of rain per year.

However, in eastern Oregon, which includes cities like Pendleton and Ontario, the annual precipitation is significantly lower, ranging from 15-25 inches (38-63 cm). This difference in precipitation levels is due to the prevailing westerly winds that bring moisture from the Pacific Ocean to the western part of the state.

The highest amount of precipitation in Oregon typically occurs during the winter months. In December, for example, some areas in Western Oregon can receive as much as 7-8 inches (18-20 cm) of rain. Even in eastern Oregon, which receives significantly less precipitation than the west, there can be occasional heavy snowfall events that result from cold air masses from Canada.

Spring brings a slight decrease in rainfall, but still remains quite wet compared to other states. In April and May, areas in western Oregon typically receive between 4-6 inches (10-15 cm) of rain per month, with some years receiving even more.

Summer months tend to be relatively dry, especially for the eastern part of the state where precipitation averages less than 1 inch (2.5 cm) per month. However, in western Oregon, there can still be occasional summer storms that bring moderate amounts of rain.

Autumn brings another increase in precipitation as fronts from the Pacific begin to shift towards the east, resulting in higher levels of rainfall across much of the state. September and October are typically among the wettest months for eastern Oregon.

In terms of temperature, winter is generally the coolest season, with average temperatures ranging from 30-40°F (-1 to 4°C) during December and January in western Oregon. Summer temperatures, on the other hand, can be quite warm, especially along the coast where oceanic influences tend to moderate temperatures.

Overall, precipitation plays a vital role in shaping Oregon’s climate and weather patterns. The state’s unique geography and position near the Pacific Ocean lead to significant variations in rainfall across different regions, making it essential for residents and visitors alike to be aware of these regional differences when planning outdoor activities or traveling within the state.

The data provided highlights the variability of precipitation levels throughout Oregon. Understanding this information can help individuals better navigate the state’s weather conditions and plan their activities accordingly.

December

Average High Temperature: 47°F (8°C)

Oregon’s climate varies greatly depending on the time of year and region within the state. The coastal areas tend to be milder, while the inland regions are more prone to extreme temperature fluctuations.

The average high temperatures in Oregon range from around 35°F (2°C) in December to a pleasant 82°F (28°C) in July, with most of the summer months averaging highs in the mid-70s to low 80s Fahrenheit.

Here’s a more detailed breakdown by month:

January

Average high temperature: 47°F (8°C)

Average low temperature: 34°F (1°C)

The coldest months of the year are typically December, January, and February, with average highs ranging from the mid-40s to around 50°F (10°C).

February

Average high temperature: 49°F (9°C)

Average low temperature: 35°F (2°C)

March

Average high temperature: 53°F (12°C)

Average low temperature: 38°F (3°C)

April

Average high temperature: 58°F (14°C)

Average low temperature: 42°F (6°C)

May

Average high temperature: 62°F (17°C)

Average low temperature: 46°F (8°C)

June

Average high temperature: 67°F (19°C)

Average low temperature: 51°F (11°C)

July

Average high temperature: 82°F (28°C)

Average low temperature: 56°F (13°C)

August

Average high temperature: 79°F (26°C)

Average low temperature: 55°F (13°C)

September

Average high temperature: 68°F (20°C)

Average low temperature: 51°F (11°C)

October

Average high temperature: 58°F (14°C)

Average low temperature: 44°F (7°C)

November

Average high temperature: 48°F (9°C)

Average low temperature: 38°F (3°C)

December

Average high temperature: 47°F (8°C)

Average low temperature: 34°F (1°C)

The wettest month is typically December, with an average of around 17 inches (43 cm) of precipitation. The driest months are usually July and August, with an average of around 0.7 inches (18 mm) of precipitation.

Average Low Temperature: 38°F (3°C)

The state of Oregon is known for its varied climate, with temperatures and precipitation levels changing significantly from north to south. While the average high temperature in Oregon can range from around 50°F (10°C) in winter to over 80°F (27°C) in summer, it’s the average low temperature that provides a more comprehensive view of the state’s overall weather patterns.

On average, the lowest temperatures occur during the months of December and January. In these two months, the average low temperature drops to around 38°F (3°C), indicating a cool and chilly climate in Oregon. This is particularly true for the northern regions of the state, where snowfall can be significant.

In fact, some parts of Oregon receive substantial amounts of precipitation during this period, with an average annual snowfall of up to 100 inches (254 cm) in the Blue Mountains region. The mountains of eastern Oregon tend to see more extreme temperature fluctuations, with temperatures sometimes dropping below freezing and rising above 50°F (10°C) within a short span.

Here’s a breakdown of average low temperatures throughout the year

Month Average Low Temperature

• January: 38°F (3°C)
• February: 40°F (4°C)
• March: 45°F (7°C)
• April: 48°F (9°C)
• May: 52°F (11°C)
• June: 58°F (14°C)
• July: 61°F (16°C)
• August: 62°F (17°C)
• September: 57°F (14°C)
• October: 48°F (9°C)
• November: 42°F (6°C)

The southern regions of Oregon, including the Willamette Valley and coastal areas, experience a milder climate, with temperatures generally ranging from around 40°F (4°C) to 55°F (13°C). The coastal region tends to be cooler than inland areas due to oceanic influence, resulting in average low temperatures closer to 45°F (7°C).

In summary, Oregon’s average low temperature is around 38°F (3°C), indicating a cool climate during the winter months. However, it’s essential to consider regional variations and weather patterns when assessing the overall temperature conditions in Oregon.

Precipitation: 6.1 inches (15.5 cm)

Precipitation is a crucial aspect of weather patterns and is closely monitored to understand various weather phenomena. It refers to any form of water falling from clouds and reaching the ground, including rain, snow, sleet, hail, and even graupel.

The average annual precipitation in Oregon can vary significantly across different regions, with some areas receiving as much as 20-30 inches (50-75 cm) or more per year. However, the statewide average is around 6.1 inches (15.5 cm), which is relatively low compared to other states.

Portland, being a major city in Oregon, experiences an average annual rainfall of about 40 inches (100 cm), with most of it occurring during the fall and winter months. The surrounding areas tend to receive less precipitation, with some zones receiving as little as 15-20 inches (38-51 cm) per year.

The driest parts of Oregon are located in the southeastern region, near the city of Ontario, where an average annual rainfall of around 8-12 inches (20-30 cm) is common. This area is influenced by its proximity to the high desert and is characterized by a semi-arid climate with cold winters and mild summers.

During the winter months (December, January, and February), Oregon typically experiences cool temperatures and precipitation in various forms. Rainfall is more frequent in western parts of the state, while eastern regions receive more snowfall. The coastal areas tend to experience milder weather compared to inland zones.

In the spring (March, April, and May), Oregon’s weather transitions from wet to dry, with a gradual increase in temperature across the state. This period is known for its unpredictable weather patterns, with occasional rain showers and sunshine breaks. The coastal areas tend to remain mild during this time, while inland regions experience warmer temperatures.

Summer (June, July, and August) brings warmer temperatures throughout Oregon, with average highs reaching 85°F (30°C). This season is characterized by clear skies and low humidity, making it ideal for outdoor activities. However, occasional heatwaves can occur during this time, especially in inland regions.

Fall (September, October, and November) marks a gradual cooling of temperatures across Oregon, with rainfall becoming more frequent throughout the state. This season is known for its vibrant fall foliage, with deciduous trees changing colors before shedding their leaves.

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Oliver White

World Travel Wordsmith at thekeepboutique.com

Oliver White, the World Travel Wordsmith, is a seasoned wanderer and wordsmith weaving enchanting tales from across the globe. With a pen as his compass, Oliver crafts vivid narratives that transport readers to the heart of diverse cultures and scenic wonders. His site is a literary odyssey, offering a passport to the richness of travel experiences. Oliver's gift for storytelling captures the essence of each destination, making his blog an inspiring guide for those seeking to explore the world through eloquent prose. Join Oliver White on a journey of discovery as he paints captivating word-scapes of the global tapestry.

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