Seneca Average Temperature by Month

This page shows the average temperature in each month of the year in Seneca, Oregon. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Seneca?
In Seneca, Oregon, the warmest month is July, with an average daily high temperature of 82.3 °F and an average low of 39.5 °F.
What's the Coldest Month in Seneca?
In Seneca, Oregon, the coolest month is January, with an average daily high temperature of 36.2 °F and an average low of 12.1 °F.
Month Avg. High Avg. Low
January 36.2 °F 12.1 °F
February 40.2 °F 14.1 °F
March 46.4 °F 20.6 °F
April 52.6 °F 26.1 °F
May 61.8 °F 32.4 °F
June 70.3 °F 36.9 °F
July 82.3 °F 39.5 °F
August 81.9 °F 35.8 °F
September 73.3 °F 28.2 °F
October 59.4 °F 22.2 °F
November 44.6 °F 18.3 °F
December 35.8 °F 12.2 °F
Year 57.0 °F 24.8 °F
Weather Station Details
Years Station Coordinates
1908–2021 Seneca location
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