The maximum daily temperature 34.7°C — 12 September 2013.
The maximum night temperature 23°C — 6 September 2017.
The minimum daily temperature 12°C — 17 September 2021.
The minimum night temperature 5°C — 30 September 2019.
Seattle, United States — weather in September
Weather in resort cities around the world, data for the past 5 years. Information includes daytime and nighttime temperatures, water temperature, rainfall, and day length. Convenient graphics and weather comparison in different resorts around the world.
Seattle — weather by month
Seattle — weather in September
Air temperature
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
Sunny, cloudy and gloomy days
Sunny days — 15
Rainy days — 7
Gloomy days — 8
Precipitation, mm
Maximum precipitation 78.4 mm — January.
Minimum precipitation 9.6 mm — August.
Wind speed, km / h
Maximum wind speed 10.1 km / h — March.
Minimum wind speed 7.9 km / h — August.
Number of hours of sunshine
The maximum number of hours of sunshine per day 10.8 h. — July.
The minimum number of hours of sunshine per day 2.9 h. — December.
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