Hail HistoryHome › Wyoming › Big Horn County
Hail history for Big Horn County, WY
40 hail reports in Big Horn County since 2006 on 20 days. The largest stones measured 2.5 in (tennis ball) on Aug 7, 2009.
Recent hail in Big Horn County
No hail was reported in Big Horn County in the last two years.
Hail days in Big Horn County by year
When hail season peaks in Big Horn County
Damaging thunderstorm winds in Big Horn County
69 reports of damaging thunderstorm wind in Big Horn County since 2006, on 53 days. The strongest measured gust was 79 mph on Jun 8, 2021.
| Date | Strongest gust | Where |
|---|---|---|
| Aug 23, 2026 | 55 mph, measured | Greybull 1 wind report |
| Aug 18, 2026 | 60 mph, measured | Hyattville 1 wind report |
| Aug 1, 2025 | 63 mph, measured | Greybull Airport 1 wind report |
| Jul 30, 2025 | 67 mph, measured | Greybull Airport 1 wind report |
| Jul 26, 2025 | 59 mph, measured | Hyattville 1 wind report |
| Jul 4, 2025 | 67 mph, measured | Greybull Airport 1 wind report |
| Sep 3, 2024 | 58 mph, measured | Greybull Airport 1 wind report |
| Aug 4, 2024 | 63 mph, measured | Cowley Airport 1 wind report |
| Jul 26, 2024 | 69 mph, measured | Greybull Airport 1 wind report |
| Jul 6, 2024 | 59 mph, measured | Greybull Airport 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 Big Horn 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).