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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, like December, is a frosty winter month in Walnut Grove, Washington, with an average temperature varying between 34.9°F (1.6°C) and 45.1°F (7.3°C). Walnut Grove indicates an average high-temperature of a still frosty 45.1°F (7.3°C) in January, showing minor variation from December's 43.7°F (6.5°C). Weather in January »
Weather in February
The last month of the winter, February, is also a frosty month in Walnut Grove, Washington, with an average temperature ranging between max 46.9°F (8.3°C) and min 35.1°F (1.7°C). The arrival of February brings an average high-temperature of a still chilly 46.9°F (8.3°C), nearly identical to January's 45.1°F (7.3°C). Weather in February »
Weather in March
March, the first month of the spring in Walnut Grove, is a cool month, with temperature in the range of an average high of 51.8°F (11°C) and an average low of 37.6°F (3.1°C). Walnut Grove's weather in March indicates an average high-temperature of a fresh 51.8°F (11°C), nearly consistent with the 46.9°F (8.3°C) of February. Weather in March »
Weather in April
April in Walnut Grove, Washington, is a mild spring month, with temperature in the range of an average high of 58.1°F (14.5°C) and an average low of 39.4°F (4.1°C). As April sets, the average high-temperature shows a slight increase, moving up from a fresh 51.8°F (11°C) in March to a refreshing 58.1°F (14.5°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in Walnut Grove, Washington, with an average temperature varying between 43.7°F (6.5°C) and 66.6°F (19.2°C). The onset of May brings a minor temperature shift, with the average high-temperature moving from a refreshing 58.1°F (14.5°C) in April to a comfortable 66.6°F (19.2°C). Weather in May »
Weather in June
June, the first month of the summer in Walnut Grove, is a pleasant month, with an average temperature varying between 47.7°F (8.7°C) and 72°F (22.2°C). June showcases a minor temperature ascent, adjusting from May's comfortable 66.6°F (19.2°C) to a pleasant 72°F (22.2°C). Weather in June »
Weather in July
July in Walnut Grove, Washington, is a warm summer month, with an average temperature varying between 51.6°F (10.9°C) and 79.5°F (26.4°C). The shift from June to July is marked by a slight increase in the average high-temperature, moving from a pleasant 72°F (22.2°C) to a moderately hot 79.5°F (26.4°C). Weather in July »
Weather in August
August, the last month of the summer in Walnut Grove, is also a moderately hot month, with an average temperature ranging between max 80.6°F (27°C) and min 54°F (12.2°C). Walnut Grove's warmest temperatures are experienced in August, with average high temperatures of 80.6°F (27°C) and lows of 54°F (12.2°C). The heat index value for August is calculated to be 82.4°F (28°C). Weather in August »
Weather in September
September, the first month of the autumn in Walnut Grove, is also an agreeable month, with an average temperature fluctuating between 73°F (22.8°C) and 50.7°F (10.4°C). With the arrival of September, Walnut Grove notices a mild change in the average high-temperature, sliding from August's warm 80.6°F (27°C) to a pleasant 73°F (22.8°C). Weather in September »
Weather in October
October, like September, in Walnut Grove, Washington, is another enjoyable autumn month, with an average temperature ranging between min 45.1°F (7.3°C) and max 60.8°F (16°C). October's arrival comes with a decrease in the average high-temperature, moving from an agreeable 73°F (22.8°C) in September to a refreshing 60.8°F (16°C). Weather in October »
Weather in November
November, the last month of the autumn in Walnut Grove, is another cool month, with an average temperature varying between 50.2°F (10.1°C) and 39.6°F (4.2°C). In November, the average high-temperature goes from an enjoyable 60.8°F (16°C) in October to a fresh 50.2°F (10.1°C). Weather in November »
Weather in December
December, the first month of the winter in Walnut Grove, is still a chilly month, with an average temperature ranging between max 43.7°F (6.5°C) and min 34°F (1.1°C). December is the month when Walnut Grove sees the lowest average temperatures, with a high of 43.7°F (6.5°C) and a low of 34°F (1.1°C). Weather in December »
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the most humid months?
The months with the highest humidity are January and February, with an average relative humidity of 84%.
How many days does it rain?
Throughout the year, there are 177.1 rainfall days, and 34.29" (871mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through March, November and December.
How many days does it snow in Walnut Grove?
In Walnut Grove, during the entire year, snow falls for 5.9 days and aggregates up to 3.74" (95mm) of snow.
What are the months with the least sunshine?
The months with the least sunshine are January and February, with an average of 4.1h of sunshine.
When is the lowest UV index?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 2.1 days and typically aggregates up to 1.42" (36mm) of snow.
When is Daylight Saving Time (DST)?
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 Walnut Grove, snow does not fall in April through October.
When are the longest days?
June has the longest days of the year, with an average of 15h and 36min of daylight.
What is the driest month?
July is the month with the least rainfall in Walnut Grove. Rain falls for 5.4 days and accumulates 0.35" (9mm) of precipitation.
When is the highest UV index?
July is the month with the highest UV index, with an average maximum UV index of 6.
What month is the hottest?
Walnut Grove's temperatures tend to reach their peak averages in August, with a high of 80.6°F (27°C) and a low of 54°F (12.2°C).
What is the least humid month?
With an average relative humidity of 65%, August is the least humid month.
What month has the most sunshine in Walnut Grove?
The month with the most sunshine is August, with an average of 11h of sunshine.
What time of the year is the coldest?
December brings the lowest temperatures, with an average high of 43.7°F (6.5°C) and an average low of 34°F (1.1°C).
What is the rainiest month?
The month with the most rainfall in Walnut Grove is December, when the rain falls for 19.6 days and typically aggregates up to 5.08" (129mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 8h and 48min of daylight.
Average temperature
Walnut Grove, WA
The warmest month (with the highest average high temperature) is August (80.6°F).
The month with the lowest average high temperature is December (43.7°F).
The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (34°F).
Average pressure
Walnut Grove, WA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
30.06"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
30.03"Hg
- Average pressure in July:
30.03"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed
Walnut Grove, WA
- Average wind speed in January:
5.5mph - Average wind speed in February:
5.3mph - Average wind speed in March:
5.2mph - Average wind speed in April:
4.7mph - Average wind speed in May:
4.1mph - Average wind speed in June:
4mph
- Average wind speed in July:
4mph - Average wind speed in August:
3.8mph - Average wind speed in September:
3.9mph - Average wind speed in October:
4.5mph - Average wind speed in November:
5.2mph - Average wind speed in December:
5.2mph
The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity
Walnut Grove, WA
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (65%).
Average rainfall
Walnut Grove, WA
- Average rainfall in January:
5.04" - Average rainfall in February:
3.62" - Average rainfall in March:
3.74" - Average rainfall in April:
3.19" - Average rainfall in May:
1.85" - Average rainfall in June:
1.46"
- Average rainfall in July:
0.35" - Average rainfall in August:
0.39" - Average rainfall in September:
1.73" - Average rainfall in October:
3.78" - Average rainfall in November:
4.06" - Average rainfall in December:
5.08"
The wettest month (with the highest rainfall) is December (5.08").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days
Walnut Grove, WA
- Average rainfall days in January:
19.3 days - Average rainfall days in February:
17.3 days - Average rainfall days in March:
20.6 days - Average rainfall days in April:
19.4 days - Average rainfall days in May:
13.8 days - Average rainfall days in June:
11.1 days
- Average rainfall days in July:
5.4 days - Average rainfall days in August:
4.9 days - Average rainfall days in September:
10.8 days - Average rainfall days in October:
15.8 days - Average rainfall days in November:
19.1 days - Average rainfall days in December:
19.6 days
The month with the highest number of rainy days is March (20.6 days).
The month with the least rainy days is August (4.9 days).
Average snowfall
Walnut Grove, WA
The month with the highest snowfall is February (1.42").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Walnut Grove, WA
- Average snowfall days in January:
1.3 days - Average snowfall days in February:
2.1 days - Average snowfall days in March:
1.4 days - Average snowfall days in April:
0 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 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
0.6 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Walnut Grove, WA
- Average daylight in January:
9h and 1min - Average daylight in February:
10h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 4min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 4min
- Average daylight in July:
15h and 2min - Average daylight in August:
14h and 1min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 3min - Average daylight in December:
8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 1min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
11h and 0min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 2min - Average sunshine in November:
4h and 4min - Average sunshine in December:
4h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The months with the least sunshine are January and February (Average sunshine: 4h and 6min).
Average sunshine days
Walnut Grove, WA
- Average sunshine days in January:
10.4 days - Average sunshine days in February:
7.9 days - Average sunshine days in March:
9.1 days - Average sunshine days in April:
8.8 days - Average sunshine days in May:
15.6 days - Average sunshine days in June:
16.5 days
- Average sunshine days in July:
24.1 days - Average sunshine days in August:
23.8 days - Average sunshine days in September:
17.7 days - Average sunshine days in October:
14 days - Average sunshine days in November:
9.5 days - Average sunshine days in December:
9.9 days
The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is February (7.9 days).
Average UV index
Walnut Grove, 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 2).
Average cloud cover
Walnut Grove, WA
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility
Walnut Grove, WA
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).