Climate and monthly weather forecast
Willamina, OR

Weather in January

January, like December, is another chilly winter month in Willamina, Oregon, with an average temperature varying between 45.1°F (7.3°C) and 34°F (1.1°C). In Willamina, the average high-temperature in January is essentially the same as in December - a still frosty 45.1°F (7.3°C). Weather in January »

Weather in February

February, the last month of the winter in Willamina, is also a frosty month, with an average temperature varying between 34.2°F (1.2°C) and 46.8°F (8.2°C). In Willamina, the average high-temperature in February is essentially the same as in January - a still chilly 46.8°F (8.2°C). Weather in February »

Weather in March

The first month of the spring, March, is a cool month in Willamina, Oregon, with an average temperature ranging between max 50.5°F (10.3°C) and min 35.8°F (2.1°C). In March, the average high-temperature is practically the same as in February - a cool 50.5°F (10.3°C). Weather in March »

Weather in April

April is a moderate spring month in Willamina, Oregon, with temperature in the range of an average low of 38.1°F (3.4°C) and an average high of 55.9°F (13.3°C). In Willamina, the average high-temperature in April slightly increases from a cool 50.5°F (10.3°C) in March to a mild 55.9°F (13.3°C). Weather in April »

Weather in May

May, the last month of the spring in Willamina, is a comfortable month, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 42.1°F (5.6°C). In May, the average high-temperature marginally rises from a moderate 55.9°F (13.3°C) in April to an enjoyable 64°F (17.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a pleasant month in Willamina, Oregon, with an average temperature ranging between max 69.3°F (20.7°C) and min 46.2°F (7.9°C). In June, the average high-temperature is essentially the same as in May - an agreeable 69.3°F (20.7°C). Weather in June »

Weather in July

July is a moderately hot summer month in Willamina, Oregon, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 50.5°F (10.3°C). In Willamina, the average high-temperature in July slightly increases from an agreeable 69.3°F (20.7°C) in June to a moderately hot 76.6°F (24.8°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Willamina, Oregon, with an average temperature ranging between max 78.4°F (25.8°C) and min 52.3°F (11.3°C). With an average high-temperature of 78.4°F (25.8°C) and an average low-temperature of 52.3°F (11.3°C), August is the warmest month. Weather in August »

Weather in September

September, the first month of the autumn in Willamina, is also an agreeable month, with an average temperature fluctuating between 71.1°F (21.7°C) and 48.7°F (9.3°C). In Willamina, Oregon, the average high-temperature in September slightly decreases from a moderately hot 78.4°F (25.8°C) in August to a pleasant 71.1°F (21.7°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Willamina, Oregon, with an average temperature varying between 59.7°F (15.4°C) and 43.7°F (6.5°C). In October, the average high-temperature decreases from an agreeable 71.1°F (21.7°C) in September to a mild 59.7°F (15.4°C). Weather in October »

Weather in November

November, the last month of the autumn in Willamina, is also a frosty month, with an average temperature ranging between min 38.5°F (3.6°C) and max 49.5°F (9.7°C). In November, the average high-temperature drops from a moderate 59.7°F (15.4°C) in October to a chilly 49.5°F (9.7°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Willamina, Oregon, with temperature in the range of an average low of 33.3°F (0.7°C) and an average high of 43.5°F (6.4°C). With an average high-temperature of 43.5°F (6.4°C) and an average low-temperature of 33.3°F (0.7°C), December is the coldest month. Weather in December »
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FAQ

How many days does it rain in Willamina?

In Willamina, during the entire year, the rain falls for 156 days and collects up to 15.94" (405mm) of precipitation.

When does it snow in Willamina?

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

How many days does it snow in Willamina?

In Willamina, during the entire year, snow falls for 5.8 days and aggregates up to 1.77" (45mm) of snow.

What are the months with the lowest UV index in Willamina?

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

What is the most humid month in Willamina?

February and December, with an average relative humidity of 89%, are most humid months in Willamina, Oregon.

When does it snow the most in Willamina?

The month with the most snowfall in Willamina, Oregon, is February, when snow falls for 2.3 days and typically aggregates up to 0.94" (24mm) of snow.

What is the month with the least sunshine in Willamina?

The month with the least sunshine in Willamina is February, with an average of 3.4h of sunshine.

When is Daylight Saving Time (DST) in Willamina?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Willamina, Oregon, 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 Willamina?

In Willamina, snow does not fall in April through October.

When are the longest days in Willamina?

June has the longest days of the year in Willamina, with an average of 15h and 34min of daylight.

What are the months with the highest UV index in Willamina?

The months with the highest UV index in Willamina, Oregon, are June and July, with an average maximum UV index of 5.

What is the driest month in Willamina?

July is the month with the least rainfall in Willamina, Oregon. Rain falls for 5.7 days and accumulates 0.24" (6mm) of precipitation.

What is the warmest month in Willamina?

With an average high-temperature of 78.4°F (25.8°C) and an average low-temperature of 52.3°F (11.3°C), August is the warmest month in Willamina.

What is the least humid month in Willamina?

August is the least humid month in Willamina, Oregon, with an average relative humidity of 71%.

What month has the most sunshine in Willamina?

With an average of 10.5h of sunshine, August has the most sunshine of the year in Willamina, Oregon.

What is the coldest month in Willamina?

December is the coldest month, with an average high-temperature of 43.5°F (6.4°C) and an average low-temperature of 33.3°F (0.7°C).

What is the wettest month in Willamina?

The month with the most rainfall is December, when the rain falls for 17.1 days and typically aggregates up to 2.56" (65mm) of precipitation.

What is the month with the shortest days in Willamina?

With an average of 8h and 50min of daylight, December has the shortest days of the year.

Average temperature
Willamina, OR

Average temperature - Willamina, OR

The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (43.5°F).

The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is December (33.3°F).

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Average pressure
Willamina, OR

Average pressure - Willamina, OR

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).

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Average wind speed
Willamina, OR

Average wind speed - Willamina, OR

The windiest month (with the highest average wind speed) is March (5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

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Average humidity
Willamina, OR

Average humidity - Willamina, OR

The months with the highest relative humidity are February and December (89%).
The month with the lowest relative humidity is August (71%).

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Average rainfall
Willamina, OR

Average rainfall - Willamina, OR

The wettest month (with the highest rainfall) is December (2.56").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days
Willamina, OR

Average rainfall days - Willamina, OR

The month with the highest number of rainy days is March (18.9 days).
The month with the least rainy days is August (4.8 days).

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Average snowfall
Willamina, OR

Average snowfall - Willamina, OR

The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Willamina, OR

Average snowfall days - Willamina, OR

The month with the highest number of snowfall days is February (2.3 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
Willamina, OR

Average daylight / Average sunshine - Willamina, OR

The month with the longest days is June (Average daylight: 15h and 34min).
The month with the shortest days is December (Average daylight: 8h and 50min).

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 3.4h).

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Average sunshine days
Willamina, OR

Average sunshine days - Willamina, OR

The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is February (9.3 days).

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Average UV index
Willamina, OR

Average UV index - Willamina, OR

The months with the highest UV index are June and July (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
Willamina, OR

Average visibility - Willamina, OR

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

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