The most recent reported hail day was 2025-08-06, 359 days ago. Aurora County is hit in most years. The largest stone on record here is 2.5 inches, a tennis ball and 2.5 times the National Weather Service's 1 inch severe criterion, reported on 2018-08-04 near Plankinton.
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 2025-08-06, around Stickney. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Aurora County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
Get free access Check an addressOur US-based call center calls the homeowners in this storm and books roof inspections straight onto your calendar. You work the storm; we fill the schedule. We dial -- you do not have to knock a single door.
See call-center options ->NOAA's Storm Prediction Center has logged 31 separate hail days here since 2010 -- 1.8 a year over 17 years of record. They carry 45 reports in total: most hail days here are logged from a single spot. 3 of those 17 years produced none at all. The busiest single year was 2025, with 3 hail days. The last five years have been quieter than the long run: 6 days since 2022, against 2.1 a year before that.
Most hail here stays under 2 inches: only 2 of the 31 days on record passed it, 6%, the last on 2018-08-04. Those big days do not follow the county's usual calendar: most of them fall in July, not August. 9 of the 31 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 White Lake -- 11 of the county's 31 hail days -- then Plankinton (6), Harrison (6), Stickney (6) and Lane (2). Beyond those, NOAA names Woonsocket on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| White Lake | 4 | 2.00″ |
| Stickney | 2 | 1.75″ |
| 7 NNW Harrison | 2 | 1.25″ |
| 2 Sse Stickney | 2 | 1.00″ |
| 4 N White Lake | 2 | 1.00″ |
The season runs June through August: 25 of the 31 hail days on record fall in those 3 months (81%). August is the single busiest month, with 10 of them (32%). That peak closes the window: the season builds all the way to its worst month and then stops. Hail has also been reported in May and September, outside that window. Reports span 5 of the 12 calendar months; the other 7 have never produced one.
| Month | Hail days |
|---|---|
| May | 3 |
| June | 7 |
| July | 8 |
| August | 10 |
| September | 3 |
That day put 1 report on the map, the biggest 1 inch near Stickney. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2025-08-06 | 1.00″ | 1 |
| 2025-07-22 | 1.25″ | 1 |
| 2025-06-16 | 1.00″ | 1 |
| 2024-07-30 | 1.00″ | 1 |
| 2023-08-10 | 1.00″ | 1 |
| 2023-07-25 | 1.00″ | 1 |
| 2021-08-30 | 1.00″ | 1 |
| 2021-08-22 | 1.75″ | 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 2.5 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: Davison County (19 hail days), Jerauld County (19) and Douglas County (20). Aurora County takes more hail than any of them.
Davison County · Jerauld County · Douglas 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, Aurora County, South Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.