The most recent reported hail day was 2025-04-17 -- 1 year ago, with nothing reported since. Burnett County is hit in most years. 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 2023-08-16 near Hertel.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Wisconsin. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2025-04-17, around Grantsburg. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Burnett 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 22 separate hail days here since 2010 -- 1.3 a year over 17 years of record. Those days carry 44 separate reports between them, two or three on a typical one. 6 of those 17 years produced none at all. One year dominates the record: 2023 alone produced 5 of the 22 days. The last five years have run hotter than the long-run rate: 11 days since 2022, against 0.9 a year before that.
4 of the 22 days reached 2 inches or more -- 18%, or about one hail day in 6, the last on 2023-08-16. They land in the same month as everything else, May. 7 of the 22 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Wisconsin, see the Wisconsin hail map and history.
Reports cluster nearest Grantsburg -- 7 of the county's 22 hail days -- then Hertel (6), Siren (6), Webb Lake (4) and Four Corners (2). Beyond those, NOAA names Webster on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Siren | 3 | 1.75″ |
| Grantsburg | 2 | 1.75″ |
| 6 Ssw Webb Lake | 2 | 1.00″ |
| 6 NE Hertel | 1 | 2.50″ |
| 1 Ssw Grantsburg | 1 | 2.00″ |
The season runs May through August: 19 of the 22 hail days on record fall in those 4 months (86%). May is the single busiest month, with 5 of them (23%). That peak opens the window: the season starts at its worst and eases off from there. Hail has also been reported in April and September, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| April | 2 |
| May | 5 |
| June | 4 |
| July | 5 |
| August | 5 |
| September | 1 |
That day put 1 report on the map, the biggest 1 inch near Grantsburg. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2025-04-17 | 1.00″ | 1 |
| 2024-08-26 | 1.25″ | 1 |
| 2023-08-28 | 1.00″ | 1 |
| 2023-08-16 | 2.50″ | 2 |
| 2023-08-11 | 1.00″ | 1 |
| 2023-07-27 | 1.50″ | 1 |
| 2023-07-19 | 2.00″ | 8 |
| 2022-08-02 | 1.50″ | 4 |
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, over the state line included: Washburn County (19 hail days), Polk County (17), Barron County (24), Pine County, Minnesota (30) and Chisago County, Minnesota (15). Burnett County sits in between.
Washburn County · Polk County · Barron County · Pine County, Minnesota · Chisago County, Minnesota
Back to the Wisconsin hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Burnett County, Wisconsin only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.