Historical Weather in Seattle, WA
Seattle's marine climate is defined by mild, overcast winters and surprisingly pleasant summers. Despite its rainy reputation, Seattle receives less annual rainfall than New York, Chicago, or Atlanta — but has more cloudy days than almost any major US city. Summer highs rarely exceed 85°F.
Part of Washington weather history · Washington temperature records
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Monthly Climate Averages
Historical temperature and precipitation averages for Seattle, WA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
Seattle, WA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Seattle, WA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Seattle, WA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Seattle, WA
Seattle, WA has no months that meet our "pleasant" threshold — every season has tradeoffs.
Seattle Temperature Records
- Record High: The hottest temperature ever recorded in Seattle, WA is 109°F, set on June 28, 2021.
- Record Low: The coldest temperature ever recorded in Seattle, WA is -1°F, set on November 23, 1985.
- Data Coverage: Based on 29 years of data from NOAA weather station: SEATTLE BOEING FLD.
All-Time Record High
All-Time Record Low
Monthly Temperature Records in Seattle
| Month | Record High | Record Low |
|---|---|---|
| January | 67°F(2015) | 4°F(1973) |
| February | 72°F(2015) | 4°F(1989) |
| March | 81°F(2004) | 13°F(1989) |
| April | 89°F(2016) | 25°F(1985) |
| May | 92°F(1983) | 27°F(1982) |
| June | 109°F(2021) | 34°F(1976) |
| July | 105°F(2009) | 40°F(1973) |
| August | 99°F(1981) | 34°F(1980) |
| September | 98°F(1988) | 28°F(1972) |
| October | 89°F(1987) | 24°F(1971) |
| November | 78°F(2010) | -1°F(1985) |
| December | 69°F(1980) | 3°F(1983) |