Heavy Rain in Mendocino County, California

Heavy Rain in Mendocino County, California: 56 recorded events between 2005 and 2025. The strongest on record measured 0. That places the county #80 nationally and #15 statewide for this hazard.

Reporting practice changed over time — early decades are undercounted, not calmer.

The busiest decade for heavy rain in Mendocino County is the 2020s, when 37 of the county's 56 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.

Within the Mendocino County archive, heavy rain makes up 40.0% of all recorded severe weather across 10 hazard types. Nationally the county sits at #80 for this hazard and #15 within California, putting it in the 96.7 percentile of all U.S. counties.

Feb is the peak month for heavy rain in Mendocino County with 17 recorded events, while May is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.

• Flood 70

How many heavy rain events are on record in Mendocino County, California?

56 heavy rain events are recorded in Mendocino County between 2005 and 2025, causing 0 direct deaths.

What is the strongest heavy rain recorded in Mendocino County?

The strongest heavy rain on record in Mendocino County measured 0.

Where does the heavy rain data for Mendocino County come from?

All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.