Climate and monthly weather forecast
Valley, WA

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Weather in January

January, the same as December, in Valley, Washington, is a freezing cold winter month, with an average temperature fluctuating between 19°F (-7.2°C) and 31.1°F (-0.5°C). During January, Valley records an average high-temperature of a still freezing cold 31.1°F (-0.5°C), marking a slight divergence from December's 29.8°F (-1.2°C). Weather in January »

Weather in February

The last month of the winter, February, is an icy month in Valley, Washington, with an average temperature fluctuating between 18.9°F (-7.3°C) and 33.8°F (1°C). Valley's weather in February, with an average high-temperature of a wintry 33.8°F (1°C), subtly shifts from January's 31.1°F (-0.5°C). Weather in February »

Weather in March

The first month of the spring, March, is also a wintry month in Valley, Washington, with temperature in the range of an average high of 42.6°F (5.9°C) and an average low of 26.8°F (-2.9°C). March signifies a subtle uplift in the average high-temperature, adjusting from a wintry 33.8°F (1°C) in February to a still cold 42.6°F (5.9°C). Weather in March »

Weather in April

April is a cool spring month in Valley, Washington, with an average temperature varying between 31.8°F (-0.1°C) and 53.4°F (11.9°C). Valley's transition into April brings a rise in the average high-temperature, moving from a cold 42.6°F (5.9°C) in March to a fresh 53.4°F (11.9°C). Weather in April »

Weather in May

May, the last month of the spring in Valley, is an enjoyable month, with an average temperature ranging between max 65.1°F (18.4°C) and min 39.6°F (4.2°C). May's onset is marked by a temperature increase, moving from a cool 53.4°F (11.9°C) in April to a refreshing 65.1°F (18.4°C). Weather in May »

Weather in June

The first month of the summer, June, is an agreeable month in Valley, Washington, with an average temperature ranging between min 44.2°F (6.8°C) and max 71.1°F (21.7°C). Valley's weather in June shows a minor rise in the average high-temperature, moving slightly up from May's comfortable 65.1°F (18.4°C) to a pleasant 71.1°F (21.7°C). Weather in June »

Weather in July

July in Valley, Washington, is a warm summer month, with an average temperature ranging between min 50.5°F (10.3°C) and max 82.6°F (28.1°C). Valley's weather in July presents a rise in the average high-temperature, moving from an agreeable 71.1°F (21.7°C) in June to a warm 82.6°F (28.1°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Valley, Washington, with an average temperature varying between 83.1°F (28.4°C) and 51.8°F (11°C). August, recognised by an average high temperature of 83.1°F (28.4°C) and a low of 51.8°F (11°C), is Valley's warmest month. The average heat index in August is evaluated at 84.2°F (29°C). Weather in August »

Weather in September

September, the first month of the autumn in Valley, is also an agreeable month, with an average temperature ranging between max 71.6°F (22°C) and min 44.6°F (7°C). The commencement of September involves a temperature shift, with the average high-temperature dropping from a warm 83.1°F (28.4°C) in August to a pleasant 71.6°F (22°C). Weather in September »

Weather in October

October, the same as September, is another fresh autumn month in Valley, Washington, with an average temperature varying between 35.2°F (1.8°C) and 54.1°F (12.3°C). As Valley transitions into October, a noticeable drop in the average high-temperature is observed, falling from an agreeable 71.6°F (22°C) in September to a fresh 54.1°F (12.3°C). Weather in October »

Weather in November

November, the last month of the autumn in Valley, is also a wintry month, with an average temperature ranging between min 26.8°F (-2.9°C) and max 39.4°F (4.1°C). A noticeable downshift in temperatures is seen as October gives way to November, with average highs moving from a fresh 54.1°F (12.3°C) to a wintry 39.4°F (4.1°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Valley, Washington, with an average temperature fluctuating between 18.7°F (-7.4°C) and 29.8°F (-1.2°C). December, characterized by an average high temperature of 29.8°F (-1.2°C) and a low temperature of 18.7°F (-7.4°C), is generally the coldest month. Weather in December »
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the most humid month in Valley?

The most humid month is January, with an average relative humidity of 94%.

What is the wettest month in Valley?

The month with the most rainfall in Valley is January, when the rain falls for 12 days and typically aggregates up to 2.2" (56mm) of precipitation.

How much does it rain in Valley?

Throughout the year, there are 141.6 rainfall days, and 17.56" (446mm) of precipitation is accumulated.

When does it snow in Valley?

January through April, September through December are months with snowfall in Valley.

When does it snow the most in Valley?

The month with the most snowfall is January, when snow falls for 13.3 days and typically aggregates up to 10.47" (266mm) of snow.

How much does it snow in Valley?

In Valley, Washington, during the entire year, snow falls for 57.8 days and aggregates up to 34.09" (866mm) of snow.

What is the month with the least sunshine in Valley?

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

When is the lowest UV index in Valley?

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

When is Daylight Saving Time (DST) in Valley?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Valley, 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 Valley?

May through August are months without snowfall.

When are the longest days in Valley?

The month with the longest days in Valley is June, with an average of 16h and 0min of daylight.

When is the highest UV index in Valley?

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

What month is the hottest in Valley?

With its average high temperature of 83.1°F (28.4°C) and a low of 51.8°F (11°C), August is regarded as the warmest month.

What is the least humid month in Valley?

August is the least humid month in Valley, with an average relative humidity of 47%.

What is the driest month in Valley?

August is the month with the least rainfall in Valley. Rain falls for 5.6 days and accumulates 0.35" (9mm) of precipitation.

What month has the most sunshine in Valley?

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

What are the coldest months in Valley?

Valley witnesses the coldest weather in December, with temperatures averaging a high of 29.8°F (-1.2°C) and a low of 18.7°F (-7.4°C).

What is the month with the shortest days in Valley?

December has the shortest days of the year in Valley, with an average of 8h and 24min of daylight.

Average temperature
Valley, WA

Average temperature - Valley, WA

The warmest month (with the highest average high temperature) is August (83.1°F).
The month with the lowest average high temperature is December (29.8°F).

The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).

Average pressure
Valley, WA

Average pressure - Valley, 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).

Average wind speed
Valley, WA

Average wind speed - Valley, WA

The windiest month (with the highest average wind speed) is April (4.7mph).
The calmest months (with the lowest average wind speed) are January and December (3.5mph).

Average humidity
Valley, WA

Average humidity - Valley, WA

The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (47%).

Average rainfall
Valley, WA

Average rainfall - Valley, WA

The wettest month (with the highest rainfall) is January (2.2").
The driest month (with the least rainfall) is August (0.35").

Average rainfall days
Valley, WA

Average rainfall days - Valley, WA

The month with the highest number of rainy days is March (17.1 days).
The month with the least rainy days is August (5.6 days).

Average snowfall
Valley, WA

Average snowfall - Valley, WA

The month with the highest snowfall is January (10.47").
The months with the least snowfall are May, June, July and August (0").

Average snowfall days
Valley, WA

Average snowfall days - Valley, WA

The month with the highest number of snowfall days is December (15.4 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight / Average sunshine
Valley, WA

Average daylight / Average sunshine - Valley, 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 24min).

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 36min).

Average sunshine days
Valley, WA

Average sunshine days - Valley, WA

The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is March (9.3 days).

Average UV index
Valley, WA

Average UV index - Valley, WA

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average visibility
Valley, WA

Average visibility - Valley, WA

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

Valley, Washington, USA

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