Hail in Stanley County, South Dakota

Hail in Stanley County, South Dakota: 183 recorded events between 1960 and 2025. The strongest on record measured 2.75. That places the county #715 nationally and #41 statewide for this hazard.

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

The busiest decade for hail in Stanley County is the 2000s, when 71 of the county's 183 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 Stanley County archive, hail makes up 42.7% of all recorded severe weather across 6 hazard types. Nationally the county sits at #715 for this hazard and #41 within South Dakota, putting it in the 77.1 percentile of all U.S. counties.

Jun is the peak month for hail in Stanley County with 64 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 199

Written by National Weather Service staff at the time of the event · public domain

How many hail events are on record in Stanley County, South Dakota?

183 hail events are recorded in Stanley County between 1960 and 2025, causing 0 direct deaths.

What is the strongest hail recorded in Stanley County?

The strongest hail on record in Stanley County measured 2.75.

Where does the hail data for Stanley 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.