Hail in Stillwater County, Montana

Hail in Stillwater County, Montana: 185 recorded events between 1958 and 2025. The strongest on record measured 2.75. That places the county #704 nationally and #18 statewide for this hazard.

Reporting practice changed over time — early decades are undercounted, not calmer.

The busiest decade for hail in Stillwater County is the 2010s, when 80 of the county's 185 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.

Within the Stillwater County archive, hail makes up 64.5% of all recorded severe weather across 8 hazard types. Nationally the county sits at #704 for this hazard and #18 within Montana, putting it in the 77.3 percentile of all U.S. counties.

Jun is the peak month for hail in Stillwater County with 77 recorded events, while Jan is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.

• Thunderstorm Wind 76

How many hail events are on record in Stillwater County, Montana?

185 hail events are recorded in Stillwater County between 1958 and 2025, causing 0 direct deaths.

What is the strongest hail recorded in Stillwater County?

The strongest hail on record in Stillwater County measured 2.75.

Where does the hail data for Stillwater County come from?

All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.