Weather statistics for Seattle, Washington (United States)

Seattle NMFC WA weather station: 6 m.a.s.l., 5.0 km away from Seattle

Average temperature per month

Graph explanation.

Explaination to the graph:
Max temperature: Average max daily (24h) temperature per month
Minimum temperature: Average minimum daily (24h) temperature per month
Average temperature: Average daily (24h) temperature per month.
The temperature normals are measured in the period 1961–1990.
Les mer om normaler her

Source: WMO

Average days with precipitation per month

Graph explanation.

The graph shows average amount of days (24h) with precipitation during a month. When precipitation has surpassed 1mm per day (24h) it is defined as a day with precipitation. The mean period is 1961–1990.

Source: WMO
Tabular view for temperature and precipitation per month
Temperature Precipitation
Months Normal Warmest Coldest Normal
January 5.2°C 7.8°C 2.4°C 15
February 6.8°C 10.3°C 3.3°C 12
March 8.1°C 12.1°C 4.2°C 13
April 10.2°C 14.5°C 5.9°C 10
May 13.4°C 17.9°C 8.8°C 7
June 16.3°C 20.9°C 11.8°C 6
July 18.5°C 23.4°C 13.6°C 4
August 18.7°C 23.4°C 14.0°C 4
September 16.0°C 20.4°C 11.6°C 6
October 11.9°C 15.6°C 8.3°C 10
November 7.9°C 10.8°C 5.0°C 15
December 5.3°C 7.9°C 2.8°C 15