The most recent reported hail day was 2025-06-28, 398 days ago. Nelson County is hit in most years. 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 2014-07-21 near Kloten.
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 2025-06-28, around Petersburg. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Nelson 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 23 separate hail days here since 2010 -- 1.4 a year over 17 years of record. They carry 29 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 2019, with 3 hail days. The last five years have been quieter than the long run: 4 days since 2022, against 1.6 a year before that.
Most hail here stays under 2 inches: only 1 of the 23 days on record passed it, 4%, the last on 2014-07-21. Those big days do not follow the county's usual calendar: most of them fall in July, not June. Golf-ball size is rarer still: 1.75 inches or more on 5 of the 23 days.
Across the whole of North Dakota, see the North Dakota hail map and history.
Reports cluster nearest Lakota -- 6 of the county's 23 hail days -- then Aneta (4), Michigan (3), McVille (3) and Brocket (2). Beyond those, NOAA names Petersburg, Tolna and Pekin on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Aneta | 3 | 1.25″ |
| 3 Sw Brocket | 2 | 1.75″ |
| Kloten | 1 | 2.00″ |
| 6 Nnw Michigan | 1 | 1.75″ |
| 8 N Lakota | 1 | 1.75″ |
The season runs June through August: 20 of the 23 hail days on record fall in those 3 months (87%). June is the single busiest month, with 8 of them (35%). That peak opens the window: the season starts at its worst and eases off from there. 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 | 2 |
| June | 8 |
| July | 7 |
| August | 5 |
| September | 1 |
That day put 1 report on the map, the biggest 1 inch near Petersburg. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2025-06-28 | 1.00″ | 1 |
| 2025-06-22 | 1.00″ | 1 |
| 2023-06-27 | 1.00″ | 1 |
| 2022-06-24 | 1.00″ | 1 |
| 2021-08-22 | 1.00″ | 1 |
| 2021-08-09 | 1.25″ | 1 |
| 2020-06-25 | 1.50″ | 1 |
| 2020-06-17 | 1.75″ | 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 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: Griggs County (25 hail days), Ramsey County (33) and Steele County (24). Every one of them takes more hail than Nelson County.
Griggs County · Ramsey County · Steele County
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, Nelson County, North Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.