Colusa Average Rainfall by Month

This page shows the average precipitation in each month of the year in Colusa, California. It is based on NOAA data for the years 1991–2020.

What's the Rainiest Month in Colusa?

In Colusa, February has the greatest precipitation of any month. On average, Colusa gets 3.3 inches of precipitation in February.

However, January is the month with the greatest chance of precipitation. 31.4% of days in January will have at least some rain.

What's the Driest Month in Colusa?

In Colusa, July has the least precipitation of any month. On average, Colusa gets 0.007 inches of precipitation in July.

July is also the month where rain is least common. Only 0.24% of days in July will have measurable rain.

Weather Station Details

Years	Station	Coordinates
1948–2024	Colusa 2 SSW	location
1893–1948	Colusa BRG	location