Hail HistoryHome › Montana › Granite County
Hail history for Granite County, MT
23 hail reports in Granite County since 2006 on 18 days. The largest stones measured 2 in (hen egg) on Jul 21, 2021.
Recent hail in Granite County
No hail was reported in Granite County in the last two years.
Hail days in Granite County by year
When hail season peaks in Granite County
Damaging thunderstorm winds in Granite County
4 reports of damaging thunderstorm wind in Granite County since 2006, on 4 days. The strongest measured gust was 55 mph on Sep 2, 2026.
| Date | Strongest gust | Where |
|---|---|---|
| Sep 2, 2026 | 55 mph, measured | Hall 1 wind report |
| Jul 26, 2025 | 60 mph, estimated | Ravenna 1 wind report |
| Jul 23, 2014 | 60 mph, estimated | Hall 1 wind report |
| Jul 6, 2007 | 58 mph, estimated | Nimrod 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 Granite 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).