Sonora Average Rainfall by Month

This page shows the average precipitation (including snowfall) in each month of the year in Sonora, California. It is based on NOAA data for the years 1991–2020.
What's the Rainiest Month in Sonora?
In Sonora, January has the greatest precipitation of any month. On average, Sonora gets 6.5 inches of precipitation in January.
January is also the month where rain is most common. 35.0% of days in January will have at least some rain.
What's the Driest Month in Sonora?
In Sonora, July has the least precipitation of any month. On average, Sonora gets 0.029 inches of precipitation in July.
July is also the month where rain is least common. Only 0.74% of days in July will have measurable rain.
Month Precipitation % Chance
January 6.46 in 35.0
February 5.32 in 34.3
March 5.03 in 31.4
April 2.86 in 21.3
May 1.51 in 12.6
June 0.36 in 4.8
July 0.03 in 0.7
August 0.07 in 1.6
September 0.20 in 3.1
October 1.67 in 11.9
November 3.42 in 24.3
December 5.89 in 32.2
Year 29.90 in 17.0
Weather Station Details
Years Station Coordinates
1903–2024 Sonora location