Imperial Average Rainfall by Month

This page shows the average precipitation in each month of the year in Imperial, California. It is based on NOAA data for the years 1991–2020.
What's the Rainiest Month in Imperial?
In Imperial, January has the greatest precipitation of any month. On average, Imperial gets 0.5 inches of precipitation in January.
January is also the month where rain is most common. 10.3% of days in January will have at least some rain.
What's the Driest Month in Imperial?
In Imperial, June has the least precipitation of any month. On average, Imperial gets 0.004 inches of precipitation in June.
June is also the month where rain is least common. Only 0.24% of days in June will have measurable rain.
Month Precipitation % Chance
January 0.48 in 10.3
February 0.43 in 9.6
March 0.34 in 6.2
April 0.09 in 2.2
May 0.06 in 1.1
June 0.00 in 0.2
July 0.14 in 2.6
August 0.18 in 4.5
September 0.26 in 3.7
October 0.21 in 3.0
November 0.22 in 4.4
December 0.39 in 9.1
Year 2.81 in 4.9
Weather Station Details
Years Station Coordinates
1901–2024 Imperial location
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