McHenry County was hit as recently as 2026-07-09, 22 days ago. McHenry County is hit in most years, often more than once. The largest stone on record here is 2.75 inches, a baseball and 2.8 times the National Weather Service's 1 inch severe criterion, reported on 2025-06-27 near George Lake.
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 2026-07-09, around Orrin. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls McHenry 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 34 separate hail days here since 2010 -- 2.0 a year over 17 years of record. Those days carry 90 separate reports between them, two or three on a typical one. 3 of those 17 years produced none at all. The busiest single year was 2017, with 4 hail days. The last five years track the long-run rate, with 9 days since 2022.
Roof-killing hail is routine here: 9 of the 34 days reached 2 inches or more, 26% of them, the last on 2025-09-11. They land in the same month as everything else, July. 14 of the 34 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 Towner -- 10 of the county's 34 hail days -- then Voltaire (7), Balfour (5), George Lake (4) and Orrin (4). Beyond those, NOAA names Bergen, Karlsruhe, Velva, Denbigh, Granville, Norwich, Bantry, Berwick and Simcoe on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Balfour | 3 | 2.75″ |
| 6 SSW Orrin | 3 | 2.50″ |
| Voltaire | 3 | 2.50″ |
| Bergen | 3 | 1.75″ |
| Towner | 3 | 1.75″ |
The season runs June through August: 29 of the 34 hail days on record fall in those 3 months (85%). July is the single busiest month, with 17 of them (50%). That peak sits inside the window rather than at either end. Hail has also been reported in April, May and September, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| April | 1 |
| May | 1 |
| June | 9 |
| July | 17 |
| August | 3 |
| September | 3 |
That day put 1 report on the map, the biggest 1.25 inches near Orrin. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-09 | 1.25″ | 1 |
| 2026-06-29 | 1.25″ | 2 |
| 2025-09-14 | 1.00″ | 1 |
| 2025-09-11 | 2.00″ | 6 |
| 2025-06-27 | 2.75″ | 11 |
| 2024-09-16 | 2.50″ | 3 |
| 2024-08-06 | 1.25″ | 2 |
| 2024-07-14 | 2.75″ | 7 |
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 2.75 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: Pierce County (23 hail days), Ward County (55) and Bottineau County (34). McHenry County sits in between.
Pierce County · Ward County · Bottineau 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, McHenry County, North Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.