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Hail in Marin County, California
12 hail events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Hail.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
NCEI records 12 hail events in Marin County, California, between 1950 and 2026, spread over 6 years.
March is the busiest month, with 7 of the recorded events. The last 20 years account for 11 events against 1 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.3% of the 936 hail events recorded in California; its 2.3 per 100 square miles compares with 0.6 statewide.
0 of the hail reports with a recorded size were golf-ball size (1.75 inches) or larger; the largest recorded stone was 0.25 inches (pea size).
Compared with California
| Measure | Marin County | California | US |
|---|---|---|---|
| Hail events since 1950 | 12 | 936 | 424,356 |
| Per 100 square miles | 2.3 | 0.6 | 12.0 |
| Per 10,000 residents | 0.5 | 0.2 | 12.8 |
| Deaths recorded | 0 | 2 | 29 |
| Busiest month | March | March | May |
By year
Seasonality
1Feb
0Mar
7Apr
1May
0Jun
0Jul
0Aug
1Sep
0Oct
0Nov
1Dec
1
Magnitude distribution
NWS hail-size descriptors
- under 1 in
- pea to quarter
- 1–1.74 in
- quarter to golf ball
- 1.75–2.74 in
- golf ball to baseball
- 2.75–3.99 in
- baseball to softball
- 4 in and larger
- softball and larger
Hail size in inches as recorded by NCEI; events without a size are not binned.
Recorded events
All 12 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 10 Mar 2021 | Hail | 0.25 in | — | — | — | — | County |
| 17 Aug 2020 | Hail | 0.25 in | — | — | — | — | County |
| 25 Mar 2020 | Hail | 0.25 in | — | — | — | — | County |
| 25 Dec 2019 | Hail | 0.25 in | $500 | — | — | — | County |
| 16 Apr 2018 | Hail | 0.25 in | — | — | — | — | County |
| 17 Mar 2018 | Hail | 0.25 in | — | — | — | — | County |
| 3 Mar 2018 | Hail | 0.25 in | — | — | — | — | County |
| 3 Mar 2018 | Hail | 0.25 in | — | — | — | — | County |
| 2 Mar 2018 | Hail | 0.25 in | — | — | — | — | County |
| 25 Jan 2018 | Hail | 0.25 in | — | — | — | — | County |
| 4 Nov 2017 | Hail | 0.25 in | — | — | — | — | County |
| 4 Mar 1996 | Hail | 0.01 in | — | — | — | — | County |
Questions and answers
How many hail events has Marin County had?
12 events in the NCEI Storm Events record between 1950 and 2026. Reporting of hail became far more complete after 1996, so early decades undercount.
When was the last recorded hail event in Marin County?
10 Mar 2021 (Hail, 0.25 in). Records reach NCEI about 120 days after the month ends.
What was the most damaging hail event recorded in Marin County?
The hail of 25 Dec 2019, with property damage estimated by NCEI at $500.
How does Marin County compare with California for hail?
2.3 events per 100 square miles against 0.6 statewide; the county holds 12 of the state's 936 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Hail hub and the county page.