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

Weather in February

February, the last month of the winter, in Olympia, is also a frosty month, with average temperature fluctuating between 46°F (7.8°C) and 33.6°F (0.9°C). In Olympia, the average high-temperature in February is essentially 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 temperature in the range of an average high of 51.1°F (10.6°C) and an average low of 35.8°F (2.1°C). In March, the average high-temperature is essentially the same as in February - a cool 51.1°F (10.6°C). Weather in March »

Weather in April

April is a moderate spring month in Olympia, Washington, with average temperature fluctuating between 37.9°F (3.3°C) and 57°F (13.9°C). In April, the average high-temperature marginally rises, from a cool 51.1°F (10.6°C) in March, to a mild 57°F (13.9°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Olympia, Washington, with average temperature ranging between max 65.7°F (18.7°C) and min 41.9°F (5.5°C). In May, the average high-temperature marginally rises, from a mild 57°F (13.9°C) in April, to an enjoyable 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 average temperature fluctuating between 70.3°F (21.3°C) and 45.3°F (7.4°C). In June, the average high-temperature is relatively the same as in May - a pleasant 70.3°F (21.3°C). Weather in June »

Weather in July

July in Olympia, Washington, is a warm summer month, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 77.9°F (25.5°C). In Olympia, the average high-temperature in July marginally rises, from an agreeable 70.3°F (21.3°C) in June, to a moderately hot 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 temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 78.6°F (25.9°C). 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). Weather in August »

Weather in September

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

Weather in October

October, the same as September, in Olympia, Washington, is a moderate autumn month, with temperature in the range of an average low of 42.3°F (5.7°C) and an average high of 58.6°F (14.8°C). In Olympia, the average high-temperature in October decreases, from an agreeable 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 another chilly month in Olympia, Washington, with temperature in the range of an average low of 38.3°F (3.5°C) and an average high of 48.6°F (9.2°C). In November, the average high-temperature decreases, from a mild 58.6°F (14.8°C) in October, to a chilly 48.6°F (9.2°C). Weather in November »

Weather in December

December, the first month of the winter, in Olympia, is also a frosty month, with average temperature ranging between min 33.4°F (0.8°C) and max 43°F (6.1°C). 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. Weather in December »
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FAQ

What is the most humid month in Olympia?

January, November and December, with an average relative humidity of 89%, are most humid months in Olympia.

How much does it rain in Olympia?

In Olympia, 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.

How much does it snow in Olympia?

Throughout the year, in Olympia, 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?

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

When does it snow the most in Olympia?

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

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?

June has the longest days of the year, with an average of 15.8h of daylight.

What are the months with the highest UV index in Olympia?

Months with the highest UV index are June and July, with an average maximum UV index of 5.

What is the least humid month in Olympia?

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

What is the driest month in Olympia?

The month with the least rainfall 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 in Olympia, 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, with an average of 10.2h of sunshine.

What is the coldest month in Olympia?

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

What is the rainiest 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 in Olympia, with an average of 8.6h of daylight.

What is the month with the least sunshine in Olympia?

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

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").
The month with the lowest atmospheric pressure is March (30.01").

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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

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").
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).
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: 15.8h).
The month with the shortest days is December (Average daylight: 8.6h).

The month with the most sunshine is August (Average sunshine: 10.2h).
The month with the least sunshine is December (Average sunshine: 3.4h).

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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

Months with the highest UV index are June and July (UV index 5).
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

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

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