The most recent reported hail day was 2026-04-13, 109 days ago. Cottonwood 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 2026-04-13 near Windom.
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 2026-04-13, around Windom. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Cottonwood 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 25 separate hail days here since 2010 -- 1.5 a year over 17 years of record. Those days carry 60 separate reports between them, two or three on a typical one. 3 of those 17 years produced none at all. One year dominates the record: 2013 alone produced 5 of the 25 days. The last five years track the long-run rate, with 7 days since 2022.
Most hail here stays under 2 inches: only 2 of the 25 days on record passed it, 8%, the last on 2026-04-13. Those big days do not follow the county's usual calendar: most of them fall in April, not June.
Across the whole of Minnesota, see the Minnesota hail map and history.
Reports cluster nearest Windom -- 8 of the county's 25 hail days -- then Mountain Lake (7), Westbrook (5), Jeffers (5) and Delft (4). Beyond those, NOAA names Dundee and Storden on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Windom | 5 | 2.00″ |
| 2 NW Windom | 2 | 2.00″ |
| 4 N Windom | 2 | 2.00″ |
| Westbrook | 2 | 1.25″ |
| 6 Nnw Mountain Lake | 2 | 1.00″ |
The season runs April through August: 20 of the 25 hail days on record fall in those 5 months (80%). June is the single busiest month, with 5 of them (20%). That peak sits inside the window rather than at either end. Hail has also been reported in September and October, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| April | 3 |
| May | 3 |
| June | 5 |
| July | 5 |
| August | 4 |
| September | 3 |
| October | 2 |
That day put 9 reports on the map, the biggest 2 inches near Windom. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-04-13 | 2.00″ | 9 |
| 2025-09-21 | 1.00″ | 2 |
| 2025-04-28 | 1.00″ | 2 |
| 2023-10-24 | 1.00″ | 1 |
| 2023-07-22 | 1.00″ | 1 |
| 2022-06-13 | 1.00″ | 1 |
| 2022-04-28 | 1.25″ | 1 |
| 2021-08-24 | 1.00″ | 3 |
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: Jackson County (26 hail days), Watonwan County (14) and Murray County (25). Cottonwood County sits in between.
Jackson County · Watonwan County · Murray 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, Cottonwood County, Minnesota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.