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Weather.com brings you the most accurate monthly weather forecast for Seattle, WA with average/record and high/low temperatures, precipitation and more.
Seattle weather by month. Click on each chart for more information. Average Temperature in Seattle. The warm season lasts for 2.8 months, from June 20 to September 12, with an average daily high temperature above 72°F. The hottest month of the year in Seattle is August, with an average high of 77°F and low of 58°F.
The average temperature is of 8.4 °C (47 °F), with a minimum of 4.4 °C (39.9 °F) and a maximum of 12.3 °C (54.1 °F). On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -0.5 °C (31 °F). However, it dropped to -3.3 °C (26.1 °F) in March 2009.
Get the monthly weather forecast for Seattle, WA, including daily high/low, historical averages, to help you plan ahead.
Seattle, Washington, USA - Climate and weather forecast by month. Detailed climate information with charts - average monthly weather with temperature, pressure, humidity, precipitation, wind, daylight, sunshine, visibility, and UV index data.
Hottest Month: August (68 °F avg) Coldest Month: December (42 °F avg) Wettest Month: November (5.10" avg) Windiest Month: March (10 mph avg) Annual precip. 30.84"
Weather.com brings you the most accurate monthly weather forecast for Seattle, WA, United States with average/record and high/low temperatures, precipitation and more.