Climate and monthly weather forecast
Corvallis, OR

A large river with two bridges across it in the city of Corvalis, Oregon, home to the famed Oregon State University
A large river with two bridges across it in the city of Corvalis, Oregon, home to the famed Oregon State University

Weather in January

January, like December, is another chilly winter month in Corvallis, Oregon, with temperature in the range of an average high of 47.3°F (8.5°C) and an average low of 34.9°F (1.6°C). In Corvallis, the average high-temperature in January is essentially the same as in December - a still frosty 47.3°F (8.5°C). Weather in January »

Weather in February

February, the last month of the winter in Corvallis, is also a frosty month, with an average temperature varying between 34.7°F (1.5°C) and 48.2°F (9°C). In Corvallis, the average high-temperature in February is relatively the same as in January - a still frosty 48.2°F (9°C). Weather in February »

Weather in March

The first month of the spring, March, is a cool month in Corvallis, Oregon, with an average temperature fluctuating between 51.8°F (11°C) and 36.5°F (2.5°C). In March, the average high-temperature is essentially the same as in February - a fresh 51.8°F (11°C). Weather in March »

Weather in April

April is a mild spring month in Corvallis, Oregon, with an average temperature fluctuating between 57.2°F (14°C) and 37.6°F (3.1°C). In Corvallis, the average high-temperature in April slightly increases from a cool 51.8°F (11°C) in March to a mild 57.2°F (14°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Corvallis, Oregon, with an average temperature ranging between max 65.1°F (18.4°C) and min 41.5°F (5.3°C). In May, the average high-temperature slightly increases from a moderate 57.2°F (14°C) in April to a comfortable 65.1°F (18.4°C). Weather in May »

Weather in June

June, the first month of the summer in Corvallis, is an agreeable month, with an average temperature ranging between max 70.3°F (21.3°C) and min 46°F (7.8°C). In June, the average high-temperature is almost the same as in May - a pleasant 70.3°F (21.3°C). Weather in June »

Weather in July

July is a moderately hot summer month in Corvallis, Oregon, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 50.4°F (10.2°C). In Corvallis, the average high-temperature in July slightly increases from a pleasant 70.3°F (21.3°C) in June to a moderately hot 78.6°F (25.9°C). Weather in July »

Weather in August

August, the last month of the summer in Corvallis, is also a moderately hot month, with an average temperature fluctuating between 52°F (11.1°C) and 80.4°F (26.9°C). With an average high-temperature of 80.4°F (26.9°C) and an average low-temperature of 52°F (11.1°C), August is the warmest month. Weather in August »

Weather in September

September, the first month of the autumn in Corvallis, is also a moderately hot month, with temperature in the range of an average high of 73.4°F (23°C) and an average low of 48.6°F (9.2°C). In September, the average high-temperature marginally drops from 80.4°F (26.9°C) in August to a still moderately hot 73.4°F (23°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Corvallis, Oregon, with an average temperature fluctuating between 61.7°F (16.5°C) and 43.7°F (6.5°C). In October, the average high-temperature drops from a warm 73.4°F (23°C) in September to an enjoyable 61.7°F (16.5°C). Weather in October »

Weather in November

November, the last month of the autumn in Corvallis, is also a fresh month, with an average temperature varying between 39°F (3.9°C) and 51.4°F (10.8°C). In November, the average high-temperature drops from an enjoyable 61.7°F (16.5°C) in October to a cool 51.4°F (10.8°C). Weather in November »

Weather in December

December, the first month of the winter in Corvallis, is also a frosty month, with temperature in the range of an average high of 44.8°F (7.1°C) and an average low of 34.2°F (1.2°C). With an average high-temperature of 44.8°F (7.1°C) and an average low-temperature of 34.2°F (1.2°C), December is the coldest month. Weather in December »
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FAQ

How many days does it rain in Corvallis?

Throughout the year, in Corvallis, there are 169.2 rainfall days, and 30.28" (769mm) of precipitation is accumulated.

When does it snow in Corvallis?

Months with snowfall are January through March, November and December.

How much does it snow in Corvallis?

Throughout the year, in Corvallis, there are 4.6 snowfall days, and 3.27" (83mm) of snow is accumulated.

When is the lowest UV index in Corvallis?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Corvallis, Oregon.

What is the snowiest month in Corvallis?

February is the month with the most snowfall. Snow falls for 1.8 days and accumulates 1.77" (45mm) of snow.

What is the month with the least sunshine in Corvallis?

February has the least sunshine of the year, with an average of 3.6h of sunshine.

When is Daylight Saving Time (DST) in Corvallis?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow in Corvallis?

In Corvallis, Oregon, snow does not fall in April through October.

When are the longest days in Corvallis?

With an average of 15h and 30min of daylight, June has the longest days of the year in Corvallis.

When is the highest UV index in Corvallis?

June through August, with an average maximum UV index of 5, are months with the highest UV index.

What is the driest month in Corvallis?

The month with the least rainfall in Corvallis, Oregon, is July, when the rain falls for 4.8 days and typically collects 0.28" (7mm) of precipitation.

What are the months with the most sunshine in Corvallis?

July and August, with an average of 10.8h of sunshine, are months with the most sunshine in Corvallis.

What is the warmest month in Corvallis?

With an average high-temperature of 80.4°F (26.9°C) and an average low-temperature of 52°F (11.1°C), August is the warmest month in Corvallis.

What is the least humid month in Corvallis?

With an average relative humidity of 69%, August is the least humid month.

What is the coldest month in Corvallis?

The coldest month in Corvallis is December, with an average high-temperature of 44.8°F (7.1°C) and an average low-temperature of 34.2°F (1.2°C).

What is the most humid month in Corvallis?

The most humid month in Corvallis, Oregon, is December, with an average relative humidity of 89%.

What is the rainiest month in Corvallis?

December is the month with the most rainfall. Rain falls for 19.1 days and accumulates 4.8" (122mm) of precipitation.

What is the month with the shortest days in Corvallis?

December has the shortest days of the year in Corvallis, Oregon, with an average of 8h and 53min of daylight.

Average temperature
Corvallis, OR

Average temperature - Corvallis, OR

The warmest month (with the highest average high temperature) is August (80.4°F).
The month with the lowest average high temperature is December (44.8°F).

The month with the highest average low temperature is August (52°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).

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Average pressure
Corvallis, OR

Average pressure - Corvallis, OR

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

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Average wind speed
Corvallis, OR

Average wind speed - Corvallis, OR

The windiest month (with the highest average wind speed) is March (4.9mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).

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Average rainfall
Corvallis, OR

Average rainfall - Corvallis, OR

The wettest month (with the highest rainfall) is December (4.8").
The driest month (with the least rainfall) is July (0.28").

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Average rainfall days
Corvallis, OR

Average rainfall days - Corvallis, OR

The month with the highest number of rainy days is March (20.9 days).
The month with the least rainy days is August (4.5 days).

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Average snowfall
Corvallis, OR

Average snowfall - Corvallis, OR

The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Corvallis, OR

Average snowfall days - Corvallis, OR

The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Corvallis, OR

Average daylight / Average sunshine - Corvallis, OR

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 53min).

The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).

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Average sunshine days
Corvallis, OR

Average sunshine days - Corvallis, OR

The month with the most sunshine days is July (24.3 days).
The month with the least sunshine days is February (8.4 days).

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Average UV index
Corvallis, OR

Average UV index - Corvallis, OR

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Corvallis, OR

Average visibility - Corvallis, OR

The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).

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