Climate and monthly weather forecastValley, WA
Climate and monthly weather forecast
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 Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The most humid month is January, with an average relative humidity of 94%.
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.
Throughout the year, there are 141.6 rainfall days, and 17.56" (446mm) of precipitation is accumulated.
January through April, September through December are months with snowfall 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.
In Valley, Washington, during the entire year, snow falls for 57.8 days and aggregates up to 34.09" (866mm) of snow.
January has the least sunshine of the year, with an average of 3.6h of sunshine.
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.
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.
May through August are months without snowfall.
The month with the longest days in Valley is June, with an average of 16h and 0min of daylight.
With an average maximum UV index of 6, July is the month with the highest UV index in Valley, Washington.
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.
August is the least humid month in Valley, with an average relative humidity of 47%.
August is the month with the least rainfall in Valley. Rain falls for 5.6 days and accumulates 0.35" (9mm) of precipitation.
The month with the most sunshine in Valley, Washington, is August, with an average of 12h of sunshine.
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).
December has the shortest days of the year in Valley, with an average of 8h and 24min of daylight.
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 in January:
30.19"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.17"Hg
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 in January:
3.5mph - Average wind speed in February:
3.6mph - Average wind speed in March:
4.3mph - Average wind speed in April:
4.7mph - Average wind speed in May:
4.4mph - Average wind speed in June:
4.2mph
- Average wind speed in July:
4.1mph - Average wind speed in August:
3.9mph - Average wind speed in September:
4mph - Average wind speed in October:
3.9mph - Average wind speed in November:
3.9mph - Average wind speed in December:
3.5mph
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
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 in January:
2.2" - Average rainfall in February:
1.5" - Average rainfall in March:
2.09" - Average rainfall in April:
1.42" - Average rainfall in May:
1.93" - Average rainfall in June:
1.3"
- Average rainfall in July:
0.55" - Average rainfall in August:
0.35" - Average rainfall in September:
0.83" - Average rainfall in October:
1.54" - Average rainfall in November:
1.81" - Average rainfall in December:
2.05"
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 in January:
12 days - Average rainfall days in February:
9.8 days - Average rainfall days in March:
17.1 days - Average rainfall days in April:
16.6 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
11.8 days
- Average rainfall days in July:
7.3 days - Average rainfall days in August:
5.6 days - Average rainfall days in September:
7.8 days - Average rainfall days in October:
12.6 days - Average rainfall days in November:
14.6 days - Average rainfall days in December:
11.6 days
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
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 in January:
13.3 days - Average snowfall days in February:
12.6 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
1.8 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.2 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
7.2 days - Average snowfall days in December:
15.4 days
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 in January:
8h and 54min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 42min - Average daylight in May:
15h and 12min - Average daylight in June:
16h and 0min
- Average daylight in July:
15h and 36min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 12min - Average daylight in December:
8h and 24min
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).
- Average sunshine in January:
3h and 36min - Average sunshine in February:
3h and 54min - Average sunshine in March:
5h and 54min - Average sunshine in April:
9h and 18min - Average sunshine in May:
10h and 30min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
11h and 42min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 18min - Average sunshine in October:
6h and 18min - Average sunshine in November:
4h and 48min - Average sunshine in December:
3h and 54min
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 in January:
11.1 days - Average sunshine days in February:
10.1 days - Average sunshine days in March:
9.3 days - Average sunshine days in April:
11.3 days - Average sunshine days in May:
14.6 days - Average sunshine days in June:
16.3 days
- Average sunshine days in July:
22.5 days - Average sunshine days in August:
22.9 days - Average sunshine days in September:
19.5 days - Average sunshine days in October:
16.6 days - Average sunshine days in November:
10.8 days - Average sunshine days in December:
12 days
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
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 cloud cover
Valley, WA
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 13).
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).
