Hail HistoryHome › California › Sonoma County
Hail history for Sonoma County, CA
20 hail reports in Sonoma County since 2006 on 11 days. The largest stones measured 0.25 in (pea) on Mar 10, 2021.
Cities in Sonoma County
- Santa Rosa
7 hail days - Petaluma
5 hail days - Rohnert Park
8 hail days - Windsor
7 hail days - Larkfield-Wikiup
7 hail days - Sebastopol
10 hail days - Cotati
8 hail days - Boyes Hot Springs
5 hail days - Penngrove
6 hail days
Recent hail in Sonoma County
No hail was reported in Sonoma County in the last two years.
Hail days in Sonoma County by year
When hail season peaks in Sonoma County
Damaging thunderstorm winds in Sonoma County
1 reports of damaging thunderstorm wind in Sonoma County since 2006, on 1 days. The strongest measured gust was 69 mph on Aug 16, 2020.
| Date | Strongest gust | Where |
|---|---|---|
| Aug 16, 2020 | 69 mph, measured | Jimtown 1 wind report |
Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.
Filing a roof or car hail claim?
Insurers ask for the date of loss. The dates on this page are when hail was reported near Sonoma County; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.
Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then).