Climate and monthly weather forecast
Allyn, WA

Weather in January

January in Allyn, Washington, is a chilly winter month, with an average temperature fluctuating between 34.7°F (1.5°C) and 44.2°F (6.8°C). In January, the average high-temperature is practically the same as in December - a frosty 44.2°F (6.8°C). Weather in January »

Weather in February

The last month of the winter, February, is another chilly month in Allyn, Washington, with an average temperature fluctuating between 34°F (1.1°C) and 45.3°F (7.4°C). In February, the average high-temperature is relatively the same as in January - a still chilly 45.3°F (7.4°C). Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Allyn, Washington, with temperature in the range of an average high of 50.2°F (10.1°C) and an average low of 36.5°F (2.5°C). In March, the average high-temperature is practically the same as in February - a fresh 50.2°F (10.1°C). Weather in March »

Weather in April

April is a moderate spring month in Allyn, Washington, with an average temperature varying between 39°F (3.9°C) and 55.9°F (13.3°C). In Allyn, the average high-temperature in April slightly increases from a cool 50.2°F (10.1°C) in March to a moderate 55.9°F (13.3°C). Weather in April »

Weather in May

May, the last month of the spring in Allyn, is an enjoyable month, with temperature in the range of an average low of 43.7°F (6.5°C) and an average high of 64.9°F (18.3°C). In Allyn, Washington, the average high-temperature in May rises from a mild 55.9°F (13.3°C) in April to a comfortable 64.9°F (18.3°C). Weather in May »

Weather in June

June, the first month of the summer in Allyn, is an agreeable month, with an average temperature ranging between min 47.5°F (8.6°C) and max 69.4°F (20.8°C). In Allyn, the average high-temperature in June is practically the same as in May - a pleasant 69.4°F (20.8°C). Weather in June »

Weather in July

July in Allyn, Washington, is a warm summer month, with temperature in the range of an average high of 77.2°F (25.1°C) and an average low of 51.6°F (10.9°C). In Allyn, the average high-temperature in July marginally rises from a pleasant 69.4°F (20.8°C) in June to a moderately hot 77.2°F (25.1°C). Weather in July »

Weather in August

August, the last month of the summer in Allyn, is another warm month, with an average temperature fluctuating between 77.4°F (25.2°C) and 53.2°F (11.8°C). With an average high-temperature of 77.4°F (25.2°C) and an average low-temperature of 53.2°F (11.8°C), August is the warmest month. Weather in August »

Weather in September

September, the first month of the autumn in Allyn, is also an agreeable month, with temperature in the range of an average high of 70.3°F (21.3°C) and an average low of 49.8°F (9.9°C). In Allyn, the average high-temperature in September marginally drops from a warm 77.4°F (25.2°C) in August to a pleasant 70.3°F (21.3°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Allyn, Washington, with an average temperature ranging between min 43.7°F (6.5°C) and max 58.5°F (14.7°C). In Allyn, the average high-temperature in October drops from an agreeable 70.3°F (21.3°C) in September to a mild 58.5°F (14.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Allyn, Washington, with an average temperature fluctuating between 38.5°F (3.6°C) and 48°F (8.9°C). In Allyn, the average high-temperature in November decreases from a moderate 58.5°F (14.7°C) in October to a chilly 48°F (8.9°C). Weather in November »

Weather in December

December, the first month of the winter in Allyn, is also a wintry month, with an average temperature fluctuating between 33.8°F (1°C) and 42.3°F (5.7°C). The coldest month is December, with an average high-temperature of 42.3°F (5.7°C) and an average low-temperature of 33.8°F (1°C). Weather in December »
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FAQ

How much does it rain in Allyn?

Throughout the year, in Allyn, Washington, there are 175.2 rainfall days, and 30.43" (773mm) of precipitation is accumulated.

When does it snow in Allyn?

Months with snowfall in Allyn are January through April, November and December.

How many days does it snow in Allyn?

In Allyn, during the entire year, snow falls for 12.1 days and aggregates up to 7.05" (179mm) of snow.

What is the month with the lowest UV index in Allyn?

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

What is the snowiest month in Allyn?

February is the month with the most snowfall. Snow falls for 3.8 days and accumulates 2.91" (74mm) of snow.

When is Daylight Saving Time (DST) in Allyn?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Allyn, Washington, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow in Allyn?

May through October are months without snowfall in Allyn.

When are the longest days in Allyn?

With an average of 15h and 53min of daylight, June has the longest days of the year in Allyn.

What is the least humid month in Allyn?

With an average relative humidity of 69%, July is the least humid month in Allyn, Washington.

What is the driest month in Allyn?

The month with the least rainfall in Allyn, Washington, is July, when the rain falls for 7.4 days and typically collects 0.43" (11mm) of precipitation.

When is the highest UV index in Allyn?

With an average maximum UV index of 6, July is the month with the highest UV index in Allyn.

What is the warmest month in Allyn?

The warmest month is August, with an average high-temperature of 77.4°F (25.2°C) and an average low-temperature of 53.2°F (11.8°C).

What month has the most sunshine in Allyn?

August has the most sunshine of the year in Allyn, Washington, with an average of 10.6h of sunshine.

What is the coldest month in Allyn?

With an average high-temperature of 42.3°F (5.7°C) and an average low-temperature of 33.8°F (1°C), December is the coldest month in Allyn, Washington.

What is the most humid month in Allyn?

With an average relative humidity of 88%, December is the most humid month in Allyn.

What is the wettest month in Allyn?

December is the month with the most rainfall in Allyn, Washington. Rain falls for 18.3 days and accumulates 5" (127mm) of precipitation.

What is the month with the shortest days in Allyn?

With an average of 8h and 32min of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Allyn?

The month with the least sunshine is December, with an average of 3.8h of sunshine.

Average temperature
Allyn, WA

Average temperature - Allyn, WA

The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is December (42.3°F).

The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is December (33.8°F).

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Average pressure
Allyn, WA

Average pressure - Allyn, WA

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).

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Average wind speed
Allyn, WA

Average wind speed - Allyn, WA

The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).

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Average rainfall
Allyn, WA

Average rainfall - Allyn, WA

The wettest month (with the highest rainfall) is December (5").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days
Allyn, WA

Average rainfall days - Allyn, WA

The month with the highest number of rainy days is March (19.7 days).
The month with the least rainy days is August (6 days).

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Average snowfall
Allyn, WA

Average snowfall - Allyn, WA

The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Allyn, WA

Average snowfall days - Allyn, WA

The month with the highest number of snowfall days is February (3.8 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
Allyn, WA

Average daylight / Average sunshine - Allyn, WA

The month with the longest days is June (Average daylight: 15h and 53min).
The month with the shortest days is December (Average daylight: 8h and 32min).

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

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Average sunshine days
Allyn, WA

Average sunshine days - Allyn, WA

The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is November (8.7 days).

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Average visibility
Allyn, WA

Average visibility - Allyn, WA

The months with the highest visibility are June, July and August (6mi).
The months with the lowest visibility are January, February, November and December (4mi).

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