Seattle in September
Seattle in September
Seattle, United States
Visiting Seattle in September means experiencing the autumn. During autumn, Seattle offers crisp air, changing colours, and a cosy atmosphere.
Weather in Seattle in September
Average highs around 21.1C and lows near 13C. 50.2mm average precipitation and about 7 rainy days. September typically sits between August and October conditions, so it is useful for travelers wanting a balanced window in Seattle. Pack flexible layers for changing daytime and evening temperatures.
Temperature
September brings autumn conditions in Seattle, United States. The average temperature is about 17.1C, with lows near 13C and highs around 21.1C.
Sunshine Hours
Seattle, United States usually gets around 9.2 hours of sunshine per day in September, with roughly 12.5 daylight hours available for sightseeing.
Rain
September sees around 50.2mm of rainfall over about 7 days. Rain can occur for around 2.8 hours per day on average.
Humidity
Humidity in September is generally dry for Seattle, United States, especially when rainfall periods increase.
