Climate in Seattle-Tacoma-Bellevue Metro Area, Washington

Seattle-Tacoma-Bellevue Metro Area, Washington gets 45 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Seattle-Tacoma-Bellevue Metro Area averages 6 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 136 sunny days per year in Seattle-Tacoma-Bellevue Metro Area. The US average is 205 sunny days.

Seattle-Tacoma-Bellevue Metro Area gets some kind of precipitation, on average, 162 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 76 degrees
Winter Low: the January low is 36
Rain: averages 45 inches of rain a year
Snow: averages 6 inches of snow a year

BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Seattle-Tacoma-Bellevue metro area is 7.3 (10=best), which means it is more comfortable than most places in Washington.

August is the hottest month for the Seattle-Tacoma-Bellevue metro area with an average high temperature of 76.3°, which ranks it as cooler than most places in Washington. In the Seattle-Tacoma-Bellevue metro area, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the Seattle-Tacoma-Bellevue metro area are August, July and September.

December has the coldest nighttime temperatures for the Seattle-Tacoma-Bellevue metro area with an average of 34.6°. This is warmer than most places in Washington.

In the Seattle-Tacoma-Bellevue metro area, there are 2.3 days annually when the high temperature is over 90°, which is cooler than most places in Washington.

In the Seattle-Tacoma-Bellevue metro area, there are 36.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Washington.

In the Seattle-Tacoma-Bellevue metro area, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Washington.

November is the wettest month in the Seattle-Tacoma-Bellevue metro area with 7.2 inches of rain, and the driest month is July with 1.0 inches. The wettest season is Spring with 38% of yearly precipitation and 9% occurs in Autumn, which is the driest season. The annual rainfall of 44.7 inches in the Seattle-Tacoma-Bellevue metro area means that it is wetter than most places in Washington.

November is the rainiest month in the Seattle-Tacoma-Bellevue metro area with 19.5 days of rain, and August is the driest month with only 5.3 rainy days. There are 162.0 rainy days annually in the Seattle-Tacoma-Bellevue metro area, which is about average compared to other places in Washington. The rainiest season is Spring when it rains 32% of the time and the driest is Autumn with only a 13% chance of a rainy day.

An annual snowfall of 5.9 inches in the Seattle-Tacoma-Bellevue metro area means that it is about average compared to other places in Washington. December is the snowiest month in the Seattle-Tacoma-Bellevue metro area with 2.0 inches of snow, and 5 months of the year have significant snowfall.

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