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
January, like December, is a frosty winter month in Olympia, Washington, with temperature in the range of an average high of 44.6°F (7°C) and an average low of 34.3°F (1.3°C). In January, the average high-temperature is essentially the same as in December - a still frosty 44.6°F (7°C). Weather in January »

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

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

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

May, the last month of the spring, in Olympia, is an enjoyable month, with average temperature varying between 41.9°F (5.5°C) and 65.7°F (18.7°C). In Olympia, Washington, the average high-temperature slightly increases, from a mild 57°F (13.9°C) in April, to an enjoyable 65.7°F (18.7°C). Weather in May »

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

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

The last month of the summer, August, is another warm month in Olympia, Washington, with average temperature varying between 78.6°F (25.9°C) and 50.5°F (10.3°C). The warmest month is August, 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 »

September, the first month of the autumn, in Olympia, is also an agreeable month, with temperature in the range of an average low of 47.7°F (8.7°C) and an average high of 70.5°F (21.4°C). In September, the average high-temperature marginally drops, from a warm 78.6°F (25.9°C) in August, to an agreeable 70.5°F (21.4°C). Weather in September »

October, like September, is another mild autumn month in Olympia, Washington, with average temperature ranging between max 58.6°F (14.8°C) and min 42.3°F (5.7°C). In Olympia, Washington, 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 »

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

The first month of the winter, December, is also a frosty month in Olympia, Washington, with temperature in the range of an average high of 43°F (6.1°C) and an average low of 33.4°F (0.8°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 »

What are the most humid months in Olympia?

Months with the highest humidity in Olympia are January, November and December, with an average relative humidity of 89%.

How many days does it rain in Olympia?

Throughout the year, in Olympia, Washington, there are 177.4 rainfall days, and 37.05" (941mm) of precipitation is accumulated.

When does it snow in Olympia?

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

How much does it snow in Olympia?

In Olympia, during the entire year, snow falls for 8.7 days, and aggregates up to 5.31" (135mm) of snow.

When is the lowest UV index in Olympia?

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

When does it snow the most in Olympia?

The month with the most snowfall in Olympia is February when snow falls for 3.3 days and typically aggregates up to 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?

The month with the longest days in Olympia is June, with an average of 15.8h of daylight.

When is the highest UV index in Olympia?

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

What is the least humid month in Olympia?

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

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 in Olympia, Washington, 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?

With an average of 10.2h of sunshine, August has the most sunshine of the year.

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?

December is the month with the most rainfall in Olympia, Washington. Rain falls for 18.8 days and accumulates 5.79" (147mm) of precipitation.

What is the month with the shortest days in Olympia?

With an average of 8.6h of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Olympia?

The month with the least sunshine in Olympia is December, with an average of 3.4h of sunshine.
Average pressure - Olympia, WA

The month with the highest atmospheric pressure is January (1018.9mbar).
The month with the lowest atmospheric pressure is March (1016.4mbar).

Average wind speed - Olympia, WA

The windiest months (with the highest average wind speed) are March and November (7.4km/h).
The calmest month (with the lowest average wind speed) is September (6.1km/h).

Average humidity - Olympia, WA
Average rainfall - 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).

Average snowfall - Olympia, WA

The month with the highest snowfall is February (59mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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).

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).

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).

Average UV index - Olympia, WA
Average visibility - Olympia, WA