Eugene Average Rainfall by Month

This page shows the average precipitation in each month of the year in Eugene, Oregon. It is based on NOAA data for the years 1991–2020.
What's the Rainiest Month in Eugene?
In Eugene, January has the greatest precipitation of any month. On average, Eugene gets 6.1 inches of precipitation in January.
However, November is the month with the greatest chance of precipitation. 58.2% of days in November will have at least some rain.
What's the Driest Month in Eugene?
In Eugene, July has the least precipitation of any month. On average, Eugene gets 0.33 inches of precipitation in July.
July is also the month where rain is least common. Only 8.4% of days in July will have measurable rain.
Month Precipitation % Chance
January 6.05 in 57.8
February 4.67 in 54.4
March 4.64 in 56.7
April 3.31 in 51.6
May 2.45 in 38.4
June 1.23 in 26.2
July 0.33 in 8.4
August 0.39 in 9.1
September 1.39 in 19.6
October 3.16 in 38.3
November 5.98 in 58.2
December 7.23 in 60.2
Year 40.83 in 39.8
Weather Station Details
Years Station Coordinates
1940–2024 Eugene Airport location
1893–1939 Eugene location
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