Climate in Seattle, Washington

Seattle, Washington gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Seattle averages 5 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 152 sunny days per year in Seattle. The US average is 205 sunny days.

Seattle gets some kind of precipitation, on average, 155 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 37
Rain: averages 38 inches of rain a year
Snow: averages 5 inches of snow a year

BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Seattle is 7.5 (10=best), which means it is one of the most pleasant places in Washington.

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

In Seattle, there are 1.7 days annually when the high temperature is over 90°, which is cooler than most places in Washington.

December has the coldest nighttime temperatures for Seattle with an average of 35.9°. This is one of the warmest places in Washington.

In Seattle, there are 24.0 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Washington.

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

Humidity in Seattle is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are August, July and September.

November is the wettest month in Seattle with 6.2 inches of rain, and the driest month is July with 0.8 inches. The wettest season is Spring with 39% of yearly precipitation and 9% occurs in Autumn, which is the driest season. The annual rainfall of 38.0 inches in Seattle means that it is about average compared to other places in Washington.

November is the rainiest month in Seattle with 18.7 days of rain, and August is the driest month with only 5.3 rainy days. There are 155.3 rainy days annually in Seattle, which is about average compared to other places in Washington. The rainiest season is Spring when it rains 33% of the time and the driest is Autumn with only a 13% chance of a rainy day.

An annual snowfall of 4.6 inches in Seattle means that it is about average compared to other places in Washington. December is the snowiest month in Seattle with 2.1 inches of snow, and 4 months of the year have significant snowfall.

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