The most recent reported hail day was 2025-07-27, 369 days ago. Grant County is hit in most years. The largest stone on record here is 1.75 inches, a golf ball and 1.8 times the National Weather Service's 1 inch severe criterion, reported on 2021-07-25 near Western.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Minnesota. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2025-07-27, around Herman. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Grant 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 30 separate hail days here since 2010 -- 1.8 a year over 17 years of record. They carry 40 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 2020, with 4 hail days. The last five years have been quieter than the long run: 5 days since 2022, against 2.1 a year before that.
No stone of 2 inches or more has ever been reported in Grant County: all 30 hail days on record topped out below that. Golf-ball size is rarer still: 1.75 inches or more on 2 of the 30 days.
Across the whole of Minnesota, see the Minnesota hail map and history.
Reports cluster nearest Herman -- 8 of the county's 30 hail days -- then Hoffman (8), Wendell (5), Norcross (5) and Ashby (4). Beyond those, NOAA names Elbow Lake and Erdahl on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Herman | 3 | 1.50″ |
| Wendell | 3 | 1.25″ |
| 2 Nw Norcross | 2 | 1.00″ |
| 4 S Western | 1 | 1.75″ |
| 4 Sw Ashby | 1 | 1.75″ |
The season runs May through July: 28 of the 30 hail days on record fall in those 3 months (93%). July is the single busiest month, with 18 of them (60%). That peak closes the window: the season builds all the way to its worst month and then stops. Hail has also been reported in August and September, outside that window. Reports span 5 of the 12 calendar months; the other 7 have never produced one.
| Month | Hail days |
|---|---|
| May | 5 |
| June | 5 |
| July | 18 |
| August | 1 |
| September | 1 |
That day put 1 report on the map, the biggest 1.5 inches near Herman. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2025-07-27 | 1.50″ | 1 |
| 2024-07-31 | 1.25″ | 1 |
| 2023-07-25 | 1.50″ | 1 |
| 2023-05-30 | 1.00″ | 1 |
| 2022-05-30 | 1.00″ | 1 |
| 2021-07-25 | 1.75″ | 2 |
| 2021-06-28 | 1.00″ | 1 |
| 2020-07-25 | 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 1.75 inches, which is the red band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own: Stevens County (19 hail days), Traverse County (20) and Douglas County (20). Grant County takes more hail than any of them.
Stevens County · Traverse County · Douglas County
Back to the Minnesota hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Grant County, Minnesota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.