Brown County was hit as recently as 2026-05-24, 68 days ago. Brown County is hit in about half the years on record. 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 2026-04-13 near Madelia.
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 2026-05-24, around New Ulm. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Brown 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 15 separate hail days here since 2010 -- 0.9 a year over 17 years of record. Those days carry 29 separate reports between them, two or three on a typical one. 7 of those 17 years produced none at all. One year dominates the record: 2026 alone produced 3 of the 15 days. The last five years have run hotter than the long-run rate: 6 days since 2022, against 0.8 a year before that.
3 of the 15 days reached 2 inches or more -- 20%, or about one hail day in 5, the last on 2026-04-13. Those big days do not follow the county's usual calendar: most of them fall in April, not May. 5 of the 15 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Minnesota, see the Minnesota hail map and history.
Reports cluster nearest New Ulm -- 5 of the county's 15 hail days -- then Springfield (4), Sleepy Eye (3), Hanska (2) and Essig (2).
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Springfield | 2 | 2.25″ |
| 1 NW New Ulm | 2 | 1.00″ |
| New Ulm | 2 | 1.00″ |
| Sleepy Eye | 2 | 1.00″ |
| 4 N Madelia | 1 | 2.75″ |
The season runs April through July: 12 of the 15 hail days on record fall in those 4 months (80%). May is the single busiest month, with 4 of them (27%). That peak sits inside the window rather than at either end. Hail has also been reported in August and October, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| April | 2 |
| May | 4 |
| June | 4 |
| July | 2 |
| August | 2 |
| October | 1 |
That day put 4 reports on the map, the biggest 1 inch near New Ulm. 3 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-05-24 | 1.00″ | 4 |
| 2026-04-17 | 1.00″ | 1 |
| 2026-04-13 | 2.75″ | 4 |
| 2024-08-26 | 1.25″ | 2 |
| 2024-07-14 | 1.00″ | 1 |
| 2023-10-24 | 2.50″ | 5 |
| 2020-06-02 | 1.25″ | 1 |
| 2018-07-25 | 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 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: Watonwan County (14 hail days), Nicollet County (20) and Sibley County (24). Brown County sits in between.
Watonwan County · Nicollet County · Sibley 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, Brown County, Minnesota only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.