124
Recorded events
2
Direct deaths
7
Direct injuries
$111.0M
Property damage
Heavy Rain in San Bernardino County, California: 124 recorded events between 1998 and 2026. The strongest on record measured 71. That places the county #18 nationally and #3 statewide for this hazard.
Decade by decade
Heavy Rain in San Bernardino County, California: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for heavy rain in San Bernardino County is the 2020s, when 79 of the county's 124 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 San Bernardino County archive, heavy rain makes up 7.6% of all recorded severe weather across 12 hazard types. Nationally the county sits at #18 for this hazard and #3 within California, putting it in the 99.3 percentile of all U.S. counties.
Seasonality
Events by month
Aug is the peak month for heavy rain in San Bernardino County with 29 recorded events, while Jun 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.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Feb 10, 2000 | LAKE ARROWHEAD | 2.48 | 2 | 3 | $400K |
| Nov 28, 1998 | REDLANDS | 0 | 0 | 4 | $0 |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Feb 16, 2026 | SCOTLAND | — | $0 |
| Nov 15, 2025 | MT BALDY | 0 | $0 |
| Nov 15, 2025 | ALTA LOMA | 0 | $0 |
| Sep 18, 2025 | SEVEN OAKS | 0 | $0 |
| Jul 18, 2025 | FAWNSKIN | 0 | $0 |
| Jul 18, 2025 | CUSHENBURY | 0 | $0 |
| Mar 13, 2025 | MT BALDY | 0 | $0 |
| Feb 14, 2025 | ONTARIO | 0 | $0 |
| Feb 14, 2025 | MUSCOY | 0 | $0 |
| Feb 14, 2025 | LAKE ARROWHEAD | 0 | $0 |
Other hazards here
More from San Bernardino County
- Flash Flood 836
- Thunderstorm Wind 197
- Flood 160
- Wildfire 90
- Hail 67
- Lightning 63
- Debris Flow 50
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Heavy rain caused minor flooding in areas with poor drainage in Fontana and Redlands. In Fontana, a home was filled with several inches of water after sandbags surrounding the home failed. In Redlands, a clogged drain caused an apartment parking lot to flood, damaging several cars.
A warehouse roof collapsed on the 11000 block of Mulberry Avenue in Fontana due to accumulation of over 1 foot of water. Drains were plugged allowing the water to accumulate. An alert gauge approximately 2 miles north of the location reported 1.02 inches of rain in 25 minutes between 1545 and 1610 PST.
Narrow band of thunderstorms formed along the foothills of the San Bernardino mountains during the morning of February 12th. This heavy rain reached 0.30 inches in 30 minutes and caused minor mud and debris flow from El Dorado burn scar in Yucaipa and Oak Glen.
Quick answers
Frequently asked
How many heavy rain events are on record in San Bernardino County, California?
124 heavy rain events are recorded in San Bernardino County between 1998 and 2026, causing 2 direct deaths.
What is the strongest heavy rain recorded in San Bernardino County?
The strongest heavy rain on record in San Bernardino County measured 71.
Where does the heavy rain data for San Bernardino 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.
Cite this page
“Heavy Rain in San Bernardino County, California.” Severe Weather History. severeweatherhistory.com/county/california/san-bernardino-county/heavy-rain/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.