McLean County was hit as recently as 2026-07-24, 7 days ago. McLean County is hit in most years, and usually several times over. The largest stone on record here is 2.5 inches, a tennis ball and 2.5 times the National Weather Service's 1 inch severe criterion, reported on 2025-06-27 near Douglas.
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 2026-07-24, around Washburn. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls McLean 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 41 separate hail days here since 2010 -- 2.4 a year over 17 years of record. Those days carry 82 separate reports between them, two or three on a typical one. Exactly one year since 2010 passed with no reported hail day at all. The busiest single year was 2024, with 6 hail days. The last five years have run hotter than the long-run rate: 16 days since 2022, against 2.1 a year before that.
Most hail here stays under 2 inches: only 2 of the 41 days on record passed it, 5%, the last on 2026-06-29. Those big days do not follow the county's usual calendar: most of them fall in June, not July. 13 of the 41 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 Max -- 8 of the county's 41 hail days -- then Washburn (7), Wilton (6), Garrison (5) and Coleharbor (5). Beyond those, NOAA names Roseglen, Turtle Lake, Emmet, White Shield, Benedict, Raub, Cross Ranch State, Mercer and Fort Stevenson State Pa on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Washburn | 6 | 1.25″ |
| Max | 5 | 2.25″ |
| Wilton | 5 | 1.75″ |
| Turtle Lake | 4 | 1.75″ |
| Garrison | 3 | 1.75″ |
The season runs June through August: 35 of the 41 hail days on record fall in those 3 months (85%). July is the single busiest month, with 15 of them (37%). 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 | 2 |
| June | 11 |
| July | 15 |
| August | 9 |
| September | 4 |
That day put 2 reports on the map, the biggest 1.25 inches near Washburn. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-24 | 1.25″ | 2 |
| 2026-06-29 | 2.25″ | 2 |
| 2025-06-27 | 2.50″ | 6 |
| 2024-09-15 | 1.00″ | 1 |
| 2024-08-28 | 1.50″ | 1 |
| 2024-07-29 | 1.00″ | 1 |
| 2024-07-14 | 1.75″ | 1 |
| 2024-07-12 | 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 2.5 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: Mercer County (33 hail days), Oliver County (24) and Sheridan County (15). McLean County takes more hail than any of them.
Mercer County · Oliver County · Sheridan 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, McLean County, North Dakota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.