Rolette County, North Dakota Hail Map & History
Rolette County was hit as recently as 2026-09-05, 9 days ago. Rolette County is hit in most years. The largest stone on record here is 3 inches, a teacup and 3 times the National Weather Service's 1 inch severe criterion, reported on 2016-08-03 near Dunseith.
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 2026-09-05, around Rolla. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Rolette 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 ->How often it hails in Rolette County
NOAA's Storm Prediction Center has logged 16 separate hail days here since 2010 -- 0.9 a year over 17 years of record. They carry 26 reports in total: most hail days here are logged from a single spot. 4 of those 17 years produced none at all. The busiest single year was 2016, with 3 hail days. The last five years track the long-run rate, with 5 days since 2022.
3 of the 16 days reached 2 inches or more -- 19%, or about one hail day in 5, the last on 2018-06-14. Those big days do not follow the county's usual calendar: most of them fall in June, not July. 6 of the 16 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of North Dakota, see the North Dakota hail map and history.
Hardest-hit places in Rolette County
Reports cluster nearest Saint John -- 4 of the county's 16 hail days -- then Rolla (4), Mylo (3), Rolette (3) and Dunseith (2). Beyond those, NOAA names Belcourt and Shell Valley on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| 2 Ne Mylo | 3 | 1.75″ |
| Saint John | 2 | 1.75″ |
| Rolette | 2 | 1.00″ |
| 11 Nnw Dunseith | 1 | 3.00″ |
| 6 Se Overly | 1 | 2.75″ |
When it hails in Rolette County
The season runs June through August: 14 of the 16 hail days on record fall in those 3 months (88%). July is the single busiest month, with 6 of them (38%). That peak sits inside the window rather than at either end. Hail has also been reported in September, outside that window. Reports span 4 of the 12 calendar months; the other 8 have never produced one.
| Month | Hail days |
|---|---|
| June | 4 |
| July | 6 |
| August | 4 |
| September | 2 |
Recent Rolette County hail days
That day put 2 reports on the map, the biggest 1.5 inches near Rolla. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-09-05 | 1.50″ | 2 |
| 2026-06-02 | 1.75″ | 1 |
| 2025-08-07 | 1.00″ | 1 |
| 2024-09-18 | 1.75″ | 2 |
| 2022-08-15 | 1.00″ | 1 |
| 2021-07-19 | 1.00″ | 1 |
| 2020-07-17 | 1.00″ | 2 |
| 2019-06-29 | 1.00″ | 1 |
How to read the Rolette County map
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 3 inches, which is the purple band. Look up a street address with the hail history by address tool.
Nearby counties
The nearest counties with a page of their own: Towner County (30 hail days), Pierce County (23) and Bottineau County (34). Every one of them takes more hail than Rolette County.
Towner County · Pierce County · Bottineau County
Back to the North Dakota hail map or the U.S. hail map.
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Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Rolette County, North Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.