Pullman Average Temperature by Month

This page shows the average temperature in each month of the year in Pullman, Washington. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Pullman?
In Pullman, Washington, the warmest month is August, with an average daily high temperature of 84.8 °F and an average low of 50.6 °F.
What's the Coldest Month in Pullman?
In Pullman, Washington, the coolest month is January, with an average daily high temperature of 37.1 °F and an average low of 25.8 °F.
Month Avg. High Avg. Low
January 37.1 °F 25.8 °F
February 41.7 °F 27.6 °F
March 49.3 °F 31.5 °F
April 56.7 °F 35.8 °F
May 66.1 °F 42.2 °F
June 72.2 °F 46.6 °F
July 83.7 °F 50.6 °F
August 84.8 °F 50.6 °F
September 75.3 °F 44.7 °F
October 60.4 °F 36.9 °F
November 45.1 °F 30.8 °F
December 36.5 °F 25.3 °F
Year 59.3 °F 37.5 °F
Weather Station Details
Years Station Coordinates
1940–2024 Pullman 2 Nw location
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