The most recent reported hail day was 2025-06-16 -- 1 year ago, with nothing reported since. Douglas County is hit in most years. The largest stone on record here is 2.75 inches, a baseball and 2.8 times the National Weather Service's 1 inch severe criterion, reported on 2014-07-26 near Corsica.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in South Dakota. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2025-06-16, around Dimock. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Douglas County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
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See call-center options ->NOAA's Storm Prediction Center has logged 20 separate hail days here since 2010 -- 1.2 a year over 17 years of record. Those days carry 40 separate reports between them, two or three on a typical one. 6 of those 17 years produced none at all. One year dominates the record: 2017 alone produced 4 of the 20 days. The last five years have been quieter than the long run: 3 days since 2022, against 1.4 a year before that.
4 of the 20 days reached 2 inches or more -- 20%, or about one hail day in 5, the last on 2023-07-30. Those big days do not follow the county's usual calendar: most of them fall in July, not June. 6 of the 20 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of South Dakota, see the South Dakota hail map and history.
Reports cluster nearest Delmont -- 11 of the county's 20 hail days -- then Corsica (5), Harrison (5), Armour (5) and Dimock (2). That one town is named on 55% of them.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| 4 Ene Corsica | 2 | 2.75″ |
| 7 W Harrison | 2 | 2.75″ |
| Delmont | 2 | 2.50″ |
| 10 W Dimock | 2 | 1.75″ |
| 3 N Delmont | 2 | 1.75″ |
The season runs April through July: 18 of the 20 hail days on record fall in those 4 months (90%). June is the single busiest month, with 8 of them (40%). That peak sits inside the window rather than at either end. Hail has also been reported in August and September, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| April | 4 |
| May | 2 |
| June | 8 |
| July | 4 |
| August | 1 |
| September | 1 |
That day put 1 report on the map, the biggest 1 inch near Dimock. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2025-06-16 | 1.00″ | 1 |
| 2023-07-30 | 2.50″ | 2 |
| 2022-04-12 | 1.75″ | 5 |
| 2020-07-06 | 1.25″ | 3 |
| 2020-06-08 | 1.00″ | 1 |
| 2018-04-13 | 1.00″ | 1 |
| 2018-04-12 | 1.00″ | 2 |
| 2017-08-13 | 1.00″ | 2 |
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Yellow is about an inch, red 1.5 to 2″, purple 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 2.75 inches, which is the purple band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own: Charles Mix County (48 hail days), Aurora County (31) and Davison County (19). Douglas County sits in between.
Charles Mix County · Aurora County · Davison County
Back to the South Dakota hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Douglas County, South Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.