Climate and monthly weather forecast
Wallula, WA

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Weather in January

January, like December, in Wallula, Washington, is an icy winter month, with an average temperature ranging between min 28.8°F (-1.8°C) and max 39°F (3.9°C). The arrival of January brings an average high-temperature of a still icy 39°F (3.9°C), nearly identical to December's 38.3°F (3.5°C). Weather in January »

Weather in February

February, the last month of the winter in Wallula, is a frosty month, with an average temperature ranging between min 32.5°F (0.3°C) and max 45.1°F (7.3°C). A gentle upsurge in temperatures occurs as January gives way to February, with average highs shifting from an icy 39°F (3.9°C) to a frosty 45.1°F (7.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Wallula, Washington, with temperature in the range of an average high of 54.1°F (12.3°C) and an average low of 38.3°F (3.5°C). March's onset is marked by a temperature increase, moving from a frosty 45.1°F (7.3°C) in February to a cool 54.1°F (12.3°C). Weather in March »

Weather in April

April in Wallula, Washington, is a refreshing spring month, with an average temperature ranging between min 43.3°F (6.3°C) and max 63.1°F (17.3°C). The arrival of April sees a shift in the average high-temperature, moving from a fresh 54.1°F (12.3°C) in March to a refreshing 63.1°F (17.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Wallula, Washington, with an average temperature ranging between min 50.5°F (10.3°C) and max 73°F (22.8°C). May's arrival signals an increase in average high-temperatures, moving from April's enjoyable 63.1°F (17.3°C) to an agreeable 73°F (22.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Wallula, Washington, with an average temperature fluctuating between 80.1°F (26.7°C) and 55.9°F (13.3°C). In Wallula, stepping into June brings a gentle temperature nudge, moving slightly up from May's agreeable 73°F (22.8°C) to a warm 80.1°F (26.7°C). Weather in June »

Weather in July

July is a hot summer month in Wallula, Washington, with an average temperature fluctuating between 62.6°F (17°C) and 90.1°F (32.3°C). July, known for its average high temperature of 90.1°F (32.3°C) and an average low temperature of 62.6°F (17°C), is the warmest month. Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Wallula, Washington, with temperature in the range of an average high of 89.2°F (31.8°C) and an average low of 64°F (17.8°C). August brings an average high-temperature of a still hot 89.2°F (31.8°C), nearly identical to the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Wallula, is still a warm month, with an average temperature varying between 77.9°F (25.5°C) and 57°F (13.9°C). The shift from August to September corresponds with a decrease in the average high-temperature, down to a moderately hot 77.9°F (25.5°C) from a tropical 89.2°F (31.8°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Wallula, Washington, with temperature in the range of an average low of 46.8°F (8.2°C) and an average high of 62.6°F (17°C). October's arrival sees a clear drop in the average high-temperature, decreasing from September's warm 77.9°F (25.5°C) to a refreshing 62.6°F (17°C). Weather in October »

Weather in November

November, the last month of the autumn in Wallula, is also a frosty month, with temperature in the range of an average high of 48.9°F (9.4°C) and an average low of 36.7°F (2.6°C). With November's arrival, Wallula, Washington, sees a decrease in average high-temperatures, moving from a comfortable 62.6°F (17°C) in October to a chilly 48.9°F (9.4°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Wallula, Washington, with temperature in the range of an average high of 38.3°F (3.5°C) and an average low of 27.9°F (-2.3°C). December, recording an average high temperature of 38.3°F (3.5°C) and a low temperature of 27.9°F (-2.3°C), is Wallula's 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 Wallula?

January is the most humid month, with an average relative humidity of 80%.

How many days does it rain in Wallula?

Throughout the year, in Wallula, there are 102.8 rainfall days, and 7.32" (186mm) of precipitation is accumulated.

When does it snow in Wallula?

Months with snowfall in Wallula are January through March, November and December.

How much does it snow in Wallula?

Throughout the year, in Wallula, there are 9.7 snowfall days, and 5.2" (132mm) of snow is accumulated.

What is the month with the least sunshine in Wallula?

The month with the least sunshine is January, with an average of 5.4h of sunshine.

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

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

What is the snowiest month in Wallula?

February is the month with the most snowfall. Snow falls for 2.7 days and accumulates 2.2" (56mm) of snow.

What is the rainiest month in Wallula?

The wettest months are March and December, with an average 0.94" (24mm) of rainfall.

When is Daylight Saving Time (DST) in Wallula?

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

April through October are months without snowfall in Wallula, Washington.

When are the longest days in Wallula?

June has the longest days of the year, with an average of 15h and 42min of daylight.

What time of the year is the hottest in Wallula?

The month of July, characterized by an average high of 90.1°F (32.3°C) and a low of 62.6°F (17°C), is recognized as the warmest in Wallula, Washington.

What is the least humid month in Wallula?

July is the least humid month, with an average relative humidity of 35%.

What is the driest month in Wallula?

The month with the least rainfall is July, when the rain falls for 3.5 days and typically collects 0.2" (5mm) of precipitation.

What month has the most sunshine in Wallula?

July has the most sunshine of the year, with an average of 12.1h of sunshine.

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

The month with the highest UV index in Wallula is July, with an average maximum UV index of 7.

What part of the year is the coldest in Wallula?

The month of December, characterized by an average high of 38.3°F (3.5°C) and a low of 27.9°F (-2.3°C), is recognized as the coldest in Wallula.

What is the month with the shortest days in Wallula?

December has the shortest days of the year, with an average of 8h and 42min of daylight.

Average temperature
Wallula, WA

Average temperature - Wallula, WA

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is December (38.3°F).

The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is December (27.9°F).

Average pressure
Wallula, WA

Average pressure - Wallula, WA

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

Average wind speed
Wallula, WA

Average wind speed - Wallula, WA

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).

Average humidity
Wallula, WA

Average humidity - Wallula, WA

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is July (35%).

Average rainfall
Wallula, WA

Average rainfall - Wallula, WA

The wettest months (with the highest rainfall) are March and December (0.94").
The driest month (with the least rainfall) is July (0.2").

Average rainfall days
Wallula, WA

Average rainfall days - Wallula, WA

The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is July (3.5 days).

Average snowfall
Wallula, WA

Average snowfall - Wallula, WA

The month with the highest snowfall is February (2.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
Wallula, WA

Average snowfall days - Wallula, WA

The month with the highest number of snowfall days is December (3.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Wallula, WA

Average daylight / Average sunshine - Wallula, WA

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

Average sunshine days
Wallula, WA

Average sunshine days - Wallula, WA

The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is March (15.4 days).

Average UV index
Wallula, WA

Average UV index - Wallula, WA

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average visibility
Wallula, WA

Average visibility - Wallula, WA

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

Wallula, Washington, USA

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