Jackson County was hit as recently as 2026-06-02, 59 days ago. Jackson County is hit in most years, and usually several times over. The largest stone on record here is 4.5 inches, a softball and 4.5 times the National Weather Service's 1 inch severe criterion, reported on 2025-06-28 near Kadoka.
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 2026-06-02, around Cactus Flat. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Jackson 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 63 separate hail days here since 2010 -- 3.7 a year over 17 years of record. They carry 112 reports in total: most hail days here are logged from a single spot. No year since 2010 has gone by without at least one. The busiest single year was 2020, with 8 hail days. The last five years track the long-run rate, with 13 days since 2022.
9 of the 63 days reached 2 inches or more -- 14%, or about one hail day in 7, the last on 2025-06-28. They land in the same month as everything else, June. 25 of the 63 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 Kadoka -- 16 of the county's 63 hail days -- then Interior (13), Belvidere (13), Wanblee (11) and Long Valley (10). Beyond those, NOAA names Potato Creek, Cactus Flat and Cottonwood on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| 8 SE Interior | 5 | 3.25″ |
| 1 S Cactus Flat | 4 | 1.75″ |
| 2 NE Kadoka | 4 | 1.75″ |
| 7 N Belvidere | 4 | 1.25″ |
| Interior | 3 | 1.75″ |
The season runs May through August: 55 of the 63 hail days on record fall in those 4 months (87%). June is the single busiest month, with 24 of them (38%). That peak sits inside the window rather than at either end. Hail has also been reported in April and September, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| April | 3 |
| May | 7 |
| June | 24 |
| July | 14 |
| August | 10 |
| September | 5 |
That day put 3 reports on the map, the biggest 1.75 inches near Cactus Flat. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-06-02 | 1.75″ | 3 |
| 2025-07-20 | 1.25″ | 1 |
| 2025-07-09 | 1.00″ | 1 |
| 2025-07-01 | 1.75″ | 3 |
| 2025-06-28 | 4.50″ | 2 |
| 2024-06-25 | 1.75″ | 2 |
| 2024-06-15 | 1.75″ | 1 |
| 2024-04-15 | 1.75″ | 3 |
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 4.5 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: Bennett County (50 hail days), Haakon County (45) and Mellette County (33). Jackson County takes more hail than any of them.
Bennett County · Haakon County · Mellette 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, Jackson County, South Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.