Climate and monthly weather forecast
Olympia, WA

The calm Capitol Lake overlooking the Washington State Capitol building in Olympia, Washington
The calm Capitol Lake overlooking the Washington State Capitol building in Olympia, Washington

Weather in January

January, the same as December, in Olympia, Washington, is another chilly winter month, with an average temperature varying between 34.3°F (1.3°C) and 44.6°F (7°C). In Olympia, the average high-temperature in January is almost the same as in December - a still frosty 44.6°F (7°C). Weather in January »

Weather in February

The last month of the winter, February, is another chilly month in Olympia, Washington, with temperature in the range of an average low of 33.6°F (0.9°C) and an average high of 46°F (7.8°C). In February, the average high-temperature is almost the same as in January - a still chilly 46°F (7.8°C). Weather in February »

Weather in March

March, the first month of the spring in Olympia, is a cool month, with an average temperature varying between 35.8°F (2.1°C) and 51.1°F (10.6°C). In March, the average high-temperature is relatively the same as in February - a fresh 51.1°F (10.6°C). Weather in March »

Weather in April

April is a moderate spring month in Olympia, Washington, with an average temperature ranging between max 57°F (13.9°C) and min 37.9°F (3.3°C). In April, the average high-temperature slightly increases from a fresh 51.1°F (10.6°C) in March to a mild 57°F (13.9°C). Weather in April »

Weather in May

May, the last month of the spring in Olympia, is an enjoyable month, with temperature in the range of an average low of 41.9°F (5.5°C) and an average high of 65.7°F (18.7°C). In May, the average high-temperature marginally rises from a moderate 57°F (13.9°C) in April to a comfortable 65.7°F (18.7°C). Weather in May »

Weather in June

The first month of the summer, June, is an agreeable month in Olympia, Washington, with an average temperature fluctuating between 45.3°F (7.4°C) and 70.3°F (21.3°C). In Olympia, the average high-temperature in June is essentially the same as in May - a pleasant 70.3°F (21.3°C). Weather in June »

Weather in July

July is a warm summer month in Olympia, Washington, with an average temperature fluctuating between 77.9°F (25.5°C) and 49.6°F (9.8°C). In July, the average high-temperature slightly increases from a pleasant 70.3°F (21.3°C) in June to a warm 77.9°F (25.5°C). Weather in July »

Weather in August

August, the last month of the summer in Olympia, is another warm month, with an average temperature varying between 50.5°F (10.3°C) and 78.6°F (25.9°C). With an average high-temperature of 78.6°F (25.9°C) and an average low-temperature of 50.5°F (10.3°C), August is the warmest month. Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Olympia, Washington, with an average temperature varying between 47.7°F (8.7°C) and 70.5°F (21.4°C). In Olympia, the average high-temperature in September slightly decreases from a warm 78.6°F (25.9°C) in August to a pleasant 70.5°F (21.4°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Olympia, Washington, with an average temperature fluctuating between 58.6°F (14.8°C) and 42.3°F (5.7°C). In Olympia, the average high-temperature in October drops from a pleasant 70.5°F (21.4°C) in September to a mild 58.6°F (14.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Olympia, Washington, with an average temperature fluctuating between 38.3°F (3.5°C) and 48.6°F (9.2°C). In Olympia, the average high-temperature in November drops from a moderate 58.6°F (14.8°C) in October to a chilly 48.6°F (9.2°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Olympia, Washington, with temperature in the range of an average low of 33.4°F (0.8°C) and an average high of 43°F (6.1°C). December is the coldest month, with an average high-temperature of 43°F (6.1°C) and an average low-temperature of 33.4°F (0.8°C). Weather in December »
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FAQ

What is the most humid month in Olympia?

The months with the highest humidity are January, November and December, with an average relative humidity of 89%.

How many days does it rain in Olympia?

In Olympia, Washington, during the entire year, the rain falls for 177.4 days and collects up to 37.05" (941mm) of precipitation.

When does it snow in Olympia?

January through March, November and December are months with snowfall in Olympia.

How much does it snow in Olympia?

Throughout the year, there are 8.7 snowfall days, and 5.31" (135mm) of snow is accumulated.

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

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

What is the snowiest month in Olympia?

February is the month with the most snowfall in Olympia, Washington. Snow falls for 3.3 days and accumulates 2.32" (59mm) of snow.

When is Daylight Saving Time (DST) in Olympia?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow in Olympia?

In Olympia, Washington, snow does not fall in April through October.

When are the longest days in Olympia?

With an average of 15h and 50min of daylight, June has the longest days of the year.

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

The months with the highest UV index in Olympia are June and July, with an average maximum UV index of 5.

What is the least humid month in Olympia?

July is the least humid month, with an average relative humidity of 71%.

What is the driest month in Olympia?

The month with the least rainfall in Olympia is July, when the rain falls for 6.9 days and typically collects 0.39" (10mm) of precipitation.

What is the warmest month in Olympia?

August is the warmest month, with an average high-temperature of 78.6°F (25.9°C) and an average low-temperature of 50.5°F (10.3°C).

What month has the most sunshine in Olympia?

August has the most sunshine of the year in Olympia, with an average of 10.2h of sunshine.

What is the coldest month in Olympia?

With an average high-temperature of 43°F (6.1°C) and an average low-temperature of 33.4°F (0.8°C), December is the coldest month.

What is the wettest month in Olympia?

The month with the most rainfall in Olympia, Washington, is December, when the rain falls for 18.8 days and typically aggregates up to 5.79" (147mm) of precipitation.

What is the month with the shortest days in Olympia?

December has the shortest days of the year, with an average of 8h and 35min of daylight.

What is the month with the least sunshine in Olympia?

December has the least sunshine of the year in Olympia, Washington, with an average of 3.4h of sunshine.

Average temperature
Olympia, WA

Average temperature - Olympia, WA

The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (43°F).

The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (33.4°F).

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Average pressure
Olympia, WA

Average pressure - Olympia, WA

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).

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Average wind speed
Olympia, WA

Average wind speed - Olympia, WA

The windiest months (with the highest average wind speed) are March and November (4.6mph).
The calmest month (with the lowest average wind speed) is September (3.8mph).

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Average humidity
Olympia, WA

Average humidity - Olympia, WA

The months with the highest relative humidity are January, November and December (89%).
The month with the lowest relative humidity is July (71%).

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Average rainfall
Olympia, WA

Average rainfall - Olympia, WA

The wettest month (with the highest rainfall) is December (5.79").
The driest month (with the least rainfall) is July (0.39").

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Average rainfall days
Olympia, WA

Average rainfall days - Olympia, WA

The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is August (5.5 days).

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Average snowfall
Olympia, WA

Average snowfall - Olympia, WA

The month with the highest snowfall is February (2.32").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Olympia, WA

Average snowfall days - Olympia, WA

The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Olympia, WA

Average daylight / Average sunshine - Olympia, WA

The month with the longest days is June (Average daylight: 15h and 50min).
The month with the shortest days is December (Average daylight: 8h and 35min).

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).

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Average sunshine days
Olympia, WA

Average sunshine days - Olympia, WA

The month with the most sunshine days is August (22.4 days).
The month with the least sunshine days is February (8.4 days).

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Average UV index
Olympia, WA

Average UV index - Olympia, WA

The months with the highest UV index are June and 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 visibility
Olympia, WA

Average visibility - Olympia, WA

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

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