Hail in Day County, South Dakota

Hail in Day County, South Dakota: 207 recorded events between 1961 and 2025. The strongest on record measured 4. That places the county #579 nationally and #31 statewide for this hazard.

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

The busiest decade for hail in Day County is the 2000s, when 73 of the county's 207 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 Day County archive, hail makes up 45.4% of all recorded severe weather across 6 hazard types. Nationally the county sits at #579 for this hazard and #31 within South Dakota, putting it in the 81.3 percentile of all U.S. counties.

Jun is the peak month for hail in Day County with 63 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 185

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

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

207 hail events are recorded in Day County between 1961 and 2025, causing 0 direct deaths.

What is the strongest hail recorded in Day County?

The strongest hail on record in Day County measured 4.

Where does the hail data for Day 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.