Bon Homme County was hit as recently as 2026-05-24, 68 days ago. Bon Homme County is hit in most years, and usually several times over. The largest stone on record here is 2 inches, a hen egg and twice the National Weather Service's 1 inch severe criterion, reported on 2020-07-17 near Springfield.
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 2026-05-24, around Scotland. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Bon Homme 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 35 separate hail days here since 2010 -- 2.1 a year over 17 years of record. Those days carry 68 separate reports between them, two or three on a typical one. 2 of those 17 years produced none at all. The busiest single year was 2023, with 6 hail days. The last five years track the long-run rate, with 13 days since 2022.
Most hail here stays under 2 inches: only 1 of the 35 days on record passed it, 3%, the last on 2020-07-17. They land in the same month as everything else, July. 11 of the 35 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 Springfield -- 15 of the county's 35 hail days -- then Tyndall (13), Avon (8), Scotland (7) and Tabor (4). That one town is named on 43% of them.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Springfield | 7 | 2.00″ |
| Tyndall | 6 | 1.25″ |
| 5 NE Tyndall | 3 | 1.75″ |
| 8 W Springfield | 3 | 1.75″ |
| Scotland | 3 | 1.25″ |
The season runs May through August: 30 of the 35 hail days on record fall in those 4 months (86%). July is the single busiest month, with 9 of them (26%). That peak sits inside the window rather than at either end. Hail has also been reported in March, April and September, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| March | 1 |
| April | 1 |
| May | 7 |
| June | 6 |
| July | 9 |
| August | 8 |
| September | 3 |
That day put 3 reports on the map, the biggest 1.5 inches near Scotland. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-05-24 | 1.50″ | 3 |
| 2025-07-09 | 1.00″ | 1 |
| 2025-06-16 | 1.75″ | 1 |
| 2025-04-28 | 1.25″ | 1 |
| 2023-07-30 | 1.75″ | 1 |
| 2023-07-23 | 1.75″ | 4 |
| 2023-07-10 | 1.75″ | 4 |
| 2023-06-24 | 1.25″ | 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 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, over the state line included: Yankton County (37 hail days), Hutchinson County (40), Douglas County (20) and Knox County, Nebraska (50). Bon Homme County sits in between.
Yankton County · Hutchinson County · Douglas County · Knox County, Nebraska
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, Bon Homme County, South Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.