Bowman County was hit as recently as 2026-06-27, 34 days ago. Bowman 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 2014-07-22 near Sunset Butte.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in North Dakota. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-06-27, around Mud Buttes. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Bowman 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 37 separate hail days here since 2010 -- 2.2 a year over 17 years of record. Those days carry 70 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 2018, with 4 hail days. The last five years have been quieter than the long run: 7 days since 2022, against 2.5 a year before that.
5 of the 37 days reached 2 inches or more -- 14%, or about one hail day in 7, the last on 2018-06-28. Those big days do not follow the county's usual calendar: most of them fall in June, not July. 15 of the 37 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of North Dakota, see the North Dakota hail map and history.
Reports cluster nearest Bowman -- 12 of the county's 37 hail days -- then Rhame (9), Scranton (8), Sunset Butte (6) and Mud Buttes (6). Beyond those, NOAA names Bowman Haley Dam, Gascoyne and Griffin on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Scranton | 7 | 2.50″ |
| Bowman | 7 | 1.75″ |
| Rhame | 4 | 1.75″ |
| 13 S Rhame | 2 | 1.75″ |
| 2 Sw Mud Buttes | 2 | 1.75″ |
The season runs June through August: 33 of the 37 hail days on record fall in those 3 months (89%). July is the single busiest month, with 16 of them (43%). That peak sits inside the window rather than at either end. 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 | 1 |
| June | 12 |
| July | 16 |
| August | 5 |
| September | 3 |
That day put 1 report on the map, the biggest 1 inch near Mud Buttes. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-06-27 | 1.00″ | 1 |
| 2025-09-12 | 1.00″ | 1 |
| 2025-07-20 | 1.75″ | 1 |
| 2023-07-31 | 1.50″ | 1 |
| 2023-07-11 | 1.75″ | 2 |
| 2022-07-04 | 1.50″ | 1 |
| 2022-06-29 | 1.00″ | 1 |
| 2020-08-11 | 1.00″ | 1 |
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, over the state line included: Slope County (23 hail days), Adams County (42), Hettinger County (47), Harding County, South Dakota (81) and Fallon County, Montana (41). Bowman County sits in between.
Slope County · Adams County · Hettinger County · Harding County, South Dakota · Fallon County, Montana
Back to the North Dakota hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Bowman County, North Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.