263
Recorded events
0
Direct deaths
0
Direct injuries
$0
Property damage
Hail in Dewey County, South Dakota: 263 recorded events between 1957 and 2025. The strongest on record measured 4. That places the county #395 nationally and #19 statewide for this hazard.
Decade by decade
Hail in Dewey County, South Dakota: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for hail in Dewey County is the 2000s, when 97 of the county's 263 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 Dewey County archive, hail makes up 51.0% of all recorded severe weather across 7 hazard types. Nationally the county sits at #395 for this hazard and #19 within South Dakota, putting it in the 87.3 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for hail in Dewey County with 93 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.
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Jul 27, 2025 | PROMISE | 1.5 | $0 |
| Jul 15, 2025 | TIMBER LAKE | 1 | $0 |
| Jun 15, 2025 | GLENCROSS | 1 | $0 |
| Jul 29, 2024 | BEAR CREEK | 0.88 | $0 |
| Jun 8, 2024 | TIMBER LAKE ARPT | 1 | $0 |
| May 20, 2024 | WHITEHORSE | 1 | $0 |
| May 19, 2024 | WHITEHORSE | 1 | $0 |
| Jul 30, 2023 | GLENCROSS | 1 | $0 |
| Jun 21, 2023 | PROMISE | 1 | $0 |
| Jun 20, 2023 | PROMISE | 1 | $0 |
Other hazards here
More from Dewey County
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
A severe thunderstorm with large hail and destructive winds left southeast Corson and continued southeast across eastern Dewey county destroying crop and grassland in its path. The storm then entered western Potter county.
Hail up to the size of golfballs hit areas west of Isabel to Isabel. To the west of Isabel, golfball size hail broke many windows and also went through the screens on several houses. The hail drifted in several places around Isabel.
Quick answers
Frequently asked
How many hail events are on record in Dewey County, South Dakota?
263 hail events are recorded in Dewey County between 1957 and 2025, causing 0 direct deaths.
What is the strongest hail recorded in Dewey County?
The strongest hail on record in Dewey County measured 4.
Where does the hail data for Dewey 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.
Cite this page
“Hail in Dewey County, South Dakota.” Severe Weather History. severeweatherhistory.com/county/south-dakota/dewey-county/hail/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.