Climate and monthly weather forecast
La Grande, WA

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Weather in January

January in La Grande, Washington, is a frosty winter month, with an average temperature fluctuating between 32.5°F (0.3°C) and 43°F (6.1°C). Shifting into January, La Grande records an average high-temperature of a chilly 43°F (6.1°C), presenting minor fluctuations compared to the previous month. Weather in January »

Weather in February

February, the last month of the winter in La Grande, is another chilly month, with temperature in the range of an average low of 31.6°F (-0.2°C) and an average high of 43.3°F (6.3°C). La Grande observes a minor difference in average high-temperatures between January's 43°F (6.1°C) and February's 43.3°F (6.3°C). Weather in February »

Weather in March

The first month of the spring, March, is also a frosty month in La Grande, Washington, with an average temperature fluctuating between 33.4°F (0.8°C) and 48°F (8.9°C). The transition from February to March sees an average high-temperature of a still frosty 48°F (8.9°C), indicating a minor variance from the prior month. Weather in March »

Weather in April

April is a fresh spring month in La Grande, Washington, with temperature in the range of an average low of 36.3°F (2.4°C) and an average high of 53.2°F (11.8°C). April ushers in an average high-temperature of a cool 53.2°F (11.8°C), aligning closely with the preceding month. Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in La Grande, Washington, with an average temperature varying between 62.1°F (16.7°C) and 40.6°F (4.8°C). As April transitions into May, La Grande notices a gentle rise in the average high-temperature, transitioning from a fresh 53.2°F (11.8°C) to a refreshing 62.1°F (16.7°C). Weather in May »

Weather in June

The first month of the summer, June, is still a refreshing month in La Grande, Washington, with an average temperature ranging between max 66.7°F (19.3°C) and min 43.9°F (6.6°C). La Grande, Washington, marks the start of June with an average high-temperature of a still refreshing 66.7°F (19.3°C), hinting at a slight fluctuation from May's 62.1°F (16.7°C). Weather in June »

Weather in July

July is a warm summer month in La Grande, Washington, with an average temperature ranging between max 74.8°F (23.8°C) and min 47.8°F (8.8°C). La Grande observes a slight uplift in the average high-temperature with the onset of July, adjusting from June's refreshing 66.7°F (19.3°C) to a warm 74.8°F (23.8°C). Weather in July »

Weather in August

August, the last month of the summer in La Grande, is another warm month, with temperature in the range of an average high of 75°F (23.9°C) and an average low of 49.5°F (9.7°C). In La Grande, August is the month with the highest recorded average temperatures, measuring a high of 75°F (23.9°C) and a low of 49.5°F (9.7°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in La Grande, Washington, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 68.2°F (20.1°C). The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's warm 75°F (23.9°C) to an agreeable 68.2°F (20.1°C). Weather in September »

Weather in October

October, like September, is another refreshing autumn month in La Grande, Washington, with an average temperature fluctuating between 57.6°F (14.2°C) and 41.5°F (5.3°C). The shift from September to October corresponds with a decrease in the average high-temperature, down to a moderate 57.6°F (14.2°C) from an agreeable 68.2°F (20.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in La Grande, Washington, with an average temperature ranging between max 47.3°F (8.5°C) and min 36.3°F (2.4°C). November involves a decrease in temperature, down from a mild 57.6°F (14.2°C) in October to a frosty 47.3°F (8.5°C). Weather in November »

Weather in December

The first month of the winter, December, is also an icy month in La Grande, Washington, with an average temperature fluctuating between 41.2°F (5.1°C) and 31.1°F (-0.5°C). La Grande's coldest temperatures are experienced in December, with average high temperatures of 41.2°F (5.1°C) and lows of 31.1°F (-0.5°C). Weather in December »
Updated: Feb 14, 2024 | Published by: Weather U.S. | Resources

Frequently asked questions

How much does it rain in La Grande?

Throughout the year, there are 182.2 rainfall days, and 37.83" (961mm) of precipitation is accumulated.

When does it snow in La Grande?

Months with snowfall in La Grande are January through April, November and December.

How many days does it snow in La Grande?

In La Grande, Washington, during the entire year, snow falls for 20.4 days and aggregates up to 13.62" (346mm) of snow.

What are the months with the lowest UV index in La Grande?

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

What is the most humid month in La Grande?

February is the most humid month in La Grande, Washington, with an average relative humidity of 88%.

What is the snowiest month in La Grande?

The month with the most snowfall in La Grande, Washington, is February, when snow falls for 6 days and typically aggregates up to 4.84" (123mm) of snow.

When is Daylight Saving Time (DST) in La Grande?

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

May through October are months without snowfall.

When are the longest days in La Grande?

June has the longest days of the year, with an average of 15h and 48min of daylight.

What is the least humid month in La Grande?

July is the least humid month, with an average relative humidity of 70%.

What is the driest month in La Grande?

July is the month with the least rainfall in La Grande. Rain falls for 7 days and accumulates 0.43" (11mm) of precipitation.

What is the month with the highest UV index in La Grande?

The month with the highest UV index in La Grande is July, with an average maximum UV index of 5.

What is the hottest time of year in La Grande?

Temperature records in La Grande, Washington, mark August as the warmest month, with highs averaging 75°F (23.9°C) and lows at 49.5°F (9.7°C).

What month has the most sunshine in La Grande?

The month with the most sunshine is August, with an average of 10.9h of sunshine.

What time of the year is the coldest in La Grande?

December, having an average high-temperature of 41.2°F (5.1°C) and an average low-temperature of 31.1°F (-0.5°C), is the coldest month in La Grande, Washington.

What is the wettest month in La Grande?

December is the month with the most rainfall. Rain falls for 18.6 days and accumulates 5.71" (145mm) of precipitation.

What is the month with the shortest days in La Grande?

The month with the shortest days in La Grande is December, with an average of 8h and 36min of daylight.

What is the month with the least sunshine in La Grande?

The month with the least sunshine in La Grande is December, with an average of 4.1h of sunshine.

Average temperature
La Grande, WA

Average temperature - La Grande, WA

The warmest month (with the highest average high temperature) is August (75°F).
The month with the lowest average high temperature is December (41.2°F).

The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (31.1°F).

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Average pressure
La Grande, WA

Average pressure - La Grande, WA

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed
La Grande, WA

Average wind speed - La Grande, WA

The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

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Average rainfall
La Grande, WA

Average rainfall - La Grande, WA

The wettest month (with the highest rainfall) is December (5.71").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days
La Grande, WA

Average rainfall days - La Grande, WA

The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (6.1 days).

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Average snowfall
La Grande, WA

Average snowfall - La Grande, WA

The month with the highest snowfall is February (4.84").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
La Grande, WA

Average snowfall days - La Grande, WA

The month with the highest number of snowfall days is February (6 days).
The months with the least snowfall days are June, July, August and October (0 days).

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Average daylight / Average sunshine
La Grande, WA

Average daylight / Average sunshine - La Grande, WA

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).

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Average sunshine days
La Grande, WA

Average sunshine days - La Grande, WA

The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is February (8 days).

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Average UV index
La Grande, WA

Average UV index - La Grande, WA

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover
La Grande, WA

Average cloud cover - La Grande, WA

The months with the most cloud cover are January, February, March and December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility
La Grande, WA

Average visibility - La Grande, WA

The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).

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La Grande, Washington, USA

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