Hail HistoryHome › Montana › Stillwater County
Hail history for Stillwater County, MT
112 hail reports in Stillwater County since 2006 on 52 days. The largest stones measured 2.75 in (baseball) on Aug 11, 2019.
Recent hail in Stillwater County
| Date | Hail size | Where |
|---|---|---|
| Aug 7, 2025 | 1.75 in golf ball | Molt 1 hail report |
| Jun 13, 2025 | 1.75 in golf ball | Columbus 4 hail reports |
One row per day: the largest hail reported in the county that day, the places and the number of reports.
Hail days in Stillwater County by year
When hail season peaks in Stillwater County
Damaging thunderstorm winds in Stillwater County
71 reports of damaging thunderstorm wind in Stillwater County since 2006, on 45 days. The strongest measured gust was 76 mph on May 13, 2007.
| Date | Strongest gust | Where |
|---|---|---|
| Aug 23, 2026 | 57 mph, measured | Cooney Reservoir, Rapelje, Columbus 6 wind reports |
| Jul 29, 2026 | 62 mph, measured | Cooney Reservoir S 1 wind report |
| Jul 28, 2026 | 64 mph, measured | Absarokee 1 wind report |
| Jul 25, 2026 | 61 mph, measured | Reed Point, Cooney Reservoir 3 wind reports |
| Jul 24, 2026 | 51 mph, measured | Hailstone Wildlife 1 wind report |
| Jul 16, 2026 | 53 mph, measured | Molt 2 wind reports |
| Jul 10, 2026 | damage reported | Park City 1 wind report |
| May 13, 2026 | 62 mph, measured | Fishtail, Absarokee 2 wind reports |
| Aug 13, 2025 | 60 mph, measured | Fishtail 1 wind report |
| May 11, 2025 | 58 mph, measured | Absarokee 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 Stillwater 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).