Climate and monthly weather forecast
Clayton, WA

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Weather in January

January in Clayton, Washington, is a wintry winter month, with temperature in the range of an average high of 32.4°F (0.2°C) and an average low of 21.2°F (-6°C). The shift into January uncovers an average high-temperature of a wintry 32.4°F (0.2°C), subtly different from the previous month. Weather in January »

Weather in February

February, the last month of the winter in Clayton, is another cold month, with an average temperature fluctuating between 21.6°F (-5.8°C) and 35.1°F (1.7°C). With the transition into February, Clayton notes an average high-temperature of a still icy 35.1°F (1.7°C), closely resembling January. Weather in February »

Weather in March

March, the first month of the spring in Clayton, is a frosty month, with an average temperature ranging between min 28.9°F (-1.7°C) and max 44.8°F (7.1°C). March comes with an increase, with the average high-temperature moving from a cold 35.1°F (1.7°C) in February to a chilly 44.8°F (7.1°C). Weather in March »

Weather in April

April in Clayton, Washington, is a cool spring month, with temperature in the range of an average high of 54.7°F (12.6°C) and an average low of 33.6°F (0.9°C). April's arrival signals a temperature shift, moving from a chilly 44.8°F (7.1°C) in March to a fresh 54.7°F (12.6°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Clayton, Washington, with an average temperature ranging between max 65.8°F (18.8°C) and min 41.4°F (5.2°C). The beginning of May marks a shift in the average high-temperature, moving from April's cool 54.7°F (12.6°C) to a comfortable 65.8°F (18.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a pleasant month in Clayton, Washington, with temperature in the range of an average high of 71.8°F (22.1°C) and an average low of 46°F (7.8°C). The shift into June brings a slight increase in the average high-temperature, moving from a refreshing 65.8°F (18.8°C) in May to an agreeable 71.8°F (22.1°C). Weather in June »

Weather in July

July is a warm summer month in Clayton, Washington, with an average temperature fluctuating between 83.5°F (28.6°C) and 52.5°F (11.4°C). The shift from June to July is marked by an increase in the average high-temperature, moving from an agreeable 71.8°F (22.1°C) to a moderately hot 83.5°F (28.6°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Clayton, Washington, with an average temperature varying between 54.3°F (12.4°C) and 84°F (28.9°C). August, with its high-temperature average of 84°F (28.9°C) and a low-temperature average of 54.3°F (12.4°C), is the warmest month. In August, the heat index is computed to be 84.2°F (29°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Clayton, Washington, with temperature in the range of an average high of 72.7°F (22.6°C) and an average low of 46.6°F (8.1°C). As Clayton enters September, the average high-temperature decreases from the a moderately hot 84°F (28.9°C) of August to an agreeable 72.7°F (22.6°C). Weather in September »

Weather in October

October, like September, is another refreshing autumn month in Clayton, Washington, with temperature in the range of an average low of 36.7°F (2.6°C) and an average high of 55.8°F (13.2°C). Clayton's transition into October is marked by a clear drop in the average high-temperature, receding from a pleasant 72.7°F (22.6°C) in September to a mild 55.8°F (13.2°C). Weather in October »

Weather in November

November, the last month of the autumn in Clayton, is another cold month, with an average temperature ranging between min 28.2°F (-2.1°C) and max 40.5°F (4.7°C). Clayton experiences a noticeable temperature shift with the start of November, with average high-temperatures moving from a moderate 55.8°F (13.2°C) in October to an icy 40.5°F (4.7°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Clayton, Washington, with an average temperature ranging between min 20.3°F (-6.5°C) and max 31.3°F (-0.4°C). Clayton experiences its lowest temperatures in December, with an average peak of 31.3°F (-0.4°C) and a low of 20.3°F (-6.5°C). Weather in December »
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Frequently asked questions

What is the most humid month in Clayton?

With an average relative humidity of 92%, January is the most humid month.

What is the rainiest month in Clayton?

The month with the most rainfall in Clayton, Washington, is January, when the rain falls for 8.8 days and typically aggregates up to 2.4" (61mm) of precipitation.

How much does it rain in Clayton?

Throughout the year, in Clayton, Washington, there are 124.9 rainfall days, and 17.44" (443mm) of precipitation is accumulated.

When does it snow in Clayton?

Months with snowfall in Clayton are January through May, September through December.

What is the snowiest month in Clayton?

The month with the most snowfall is January, when snow falls for 16 days and typically aggregates up to 13.23" (336mm) of snow.

How much does it snow in Clayton?

Throughout the year, there are 69.2 snowfall days, and 42.99" (1092mm) of snow is accumulated.

What is the month with the least sunshine in Clayton?

The month with the least sunshine is January, with an average of 3.4h of sunshine.

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

The months with the lowest UV index are February, November and December, with an average maximum UV index of 1.

When is Daylight Saving Time (DST) in Clayton?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow in Clayton?

June through August are months without snowfall in Clayton, Washington.

When are the longest days in Clayton?

June has the longest days of the year in Clayton, with an average of 16h and 0min of daylight.

What is the month with the highest UV index in Clayton?

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

What is the warmest month in Clayton?

In Clayton, August is known for its average highest temperatures, reaching a high of 84°F (28.9°C) and a low of 54.3°F (12.4°C).

What is the least humid month in Clayton?

August is the least humid month in Clayton, Washington, with an average relative humidity of 43%.

What is the driest month in Clayton?

August is the month with the least rainfall in Clayton. Rain falls for 5.1 days and accumulates 0.31" (8mm) of precipitation.

What month has the most sunshine in Clayton?

The month with the most sunshine is August, with an average of 12h of sunshine.

What are the coldest months in Clayton?

In Clayton, December is the month with the lowest recorded average temperatures, measuring a high of 31.3°F (-0.4°C) and a low of 20.3°F (-6.5°C).

What is the month with the shortest days in Clayton?

With an average of 8h and 30min of daylight, December has the shortest days of the year in Clayton.

Average temperature
Clayton, WA

Average temperature - Clayton, WA

The warmest month (with the highest average high temperature) is August (84°F).
The month with the lowest average high temperature is December (31.3°F).

The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is December (20.3°F).

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Average pressure
Clayton, WA

Average pressure - Clayton, WA

The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).

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Average wind speed
Clayton, WA

Average wind speed - Clayton, WA

The windiest month (with the highest average wind speed) is April (5.6mph).
The calmest month (with the lowest average wind speed) is December (4mph).

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Average rainfall
Clayton, WA

Average rainfall - Clayton, WA

The wettest month (with the highest rainfall) is January (2.4").
The driest month (with the least rainfall) is August (0.31").

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Average rainfall days
Clayton, WA

Average rainfall days - Clayton, WA

The month with the highest number of rainy days is March (16.2 days).
The month with the least rainy days is August (5.1 days).

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Average snowfall
Clayton, WA

Average snowfall - Clayton, WA

The month with the highest snowfall is January (13.23").
The months with the least snowfall are June, July and August (0").

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Average snowfall days
Clayton, WA

Average snowfall days - Clayton, WA

The month with the highest number of snowfall days is December (16.9 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Clayton, WA

Average daylight / Average sunshine - Clayton, WA

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days
Clayton, WA

Average sunshine days - Clayton, WA

The month with the most sunshine days is July (24.2 days).
The month with the least sunshine days is March (9.7 days).

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Average visibility
Clayton, WA

Average visibility - Clayton, WA

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).

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Clayton, Washington, USA

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