Hail in Custer County, Montana

Hail in Custer County, Montana: 239 recorded events between 1958 and 2025. The strongest on record measured 4.5. That places the county #469 nationally and #13 statewide for this hazard.

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

The busiest decade for hail in Custer County is the 2000s, when 84 of the county's 239 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 Custer County archive, hail makes up 43.9% of all recorded severe weather across 8 hazard types. Nationally the county sits at #469 for this hazard and #13 within Montana, putting it in the 85.0 percentile of all U.S. counties.

Jun is the peak month for hail in Custer County with 92 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 254

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

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

What is the strongest hail recorded in Custer County?

The strongest hail on record in Custer County measured 4.5.

Where does the hail data for Custer 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.