Paso Robles Average Rainfall by Month

This page shows the average precipitation in each month of the year in Paso Robles, California. It is based on NOAA data for the years 1991–2020.
What's the Rainiest Month in Paso Robles?
In Paso Robles, January has the greatest precipitation of any month. On average, Paso Robles gets 3.4 inches of precipitation in January.
However, February is the month with the greatest chance of precipitation. 32.7% of days in February will have at least some rain.
What's the Driest Month in Paso Robles?
In Paso Robles, August has the least precipitation of any month. On average, Paso Robles gets 0.023 inches of precipitation in August.
August is also the month where rain is least common. Only 0.78% of days in August will have measurable rain.
Month Precipitation % Chance
January 3.44 in 26.0
February 3.24 in 32.7
March 2.83 in 25.6
April 0.73 in 13.0
May 0.36 in 5.5
June 0.04 in 1.8
July 0.10 in 1.0
August 0.02 in 0.8
September 0.08 in 2.2
October 0.70 in 7.8
November 1.18 in 14.5
December 2.51 in 25.2
Year 15.17 in 13.0
Weather Station Details
Years Station Coordinates
1894–2024 Paso Robles location
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