Pendleton Average Temperature by Month

This page shows the average temperature in each month of the year in Pendleton, Oregon. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Pendleton?
In Pendleton, Oregon, the warmest month is July, with an average daily high temperature of 89.2 °F and an average low of 57.2 °F.
What's the Coldest Month in Pendleton?
In Pendleton, Oregon, the coolest month is January, with an average daily high temperature of 41.7 °F and an average low of 28.5 °F.
Month Avg. High Avg. Low
January 41.7 °F 28.5 °F
February 46.5 °F 30.0 °F
March 55.0 °F 34.2 °F
April 61.9 °F 38.7 °F
May 70.9 °F 45.5 °F
June 78.4 °F 51.1 °F
July 89.2 °F 57.2 °F
August 87.7 °F 56.5 °F
September 78.2 °F 49.5 °F
October 63.5 °F 39.9 °F
November 49.1 °F 32.8 °F
December 40.8 °F 27.9 °F
Year 63.7 °F 41.0 °F
Weather Station Details
Years Station Coordinates
1928–2024 Pendleton location
1892–1927 Pendleton Downtown location