Calumet County, Wisconsin Hail Map & History
Calumet County was hit as recently as 2026-07-27, 43 days ago. Calumet County is hit in about half the years on record. 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 2026-03-30 near Stockbridge.
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 2026-07-27, around Darboy. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Calumet 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 ->How often it hails in Calumet County
NOAA's Storm Prediction Center has logged 13 separate hail days here since 2010 -- 0.8 a year over 17 years of record. They carry 20 reports in total: most hail days here are logged from a single spot. 9 of those 17 years produced none at all. One year dominates the record: 2021 alone produced 3 of the 13 days. The last five years have been quieter than the long run: 2 days since 2022, against 0.9 a year before that.
No stone of 2 inches or more has ever been reported in Calumet County: all 13 hail days on record topped out below that. Golf-ball size is rarer still: 1.75 inches or more on 2 of the 13 days.
Across the whole of Wisconsin, see the Wisconsin hail map and history.
Hardest-hit places in Calumet County
Reports cluster nearest Darboy -- 4 of the county's 13 hail days -- then Stockbridge (3), Appleton (2) and Sherwood (2).
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Darboy | 3 | 1.25″ |
| 1 N Stockbridge | 2 | 1.75″ |
| 2 S Darboy | 1 | 1.75″ |
| 8 Se Appleton | 1 | 1.50″ |
| 1 Wsw Chilton | 1 | 1.25″ |
When it hails in Calumet County
The season runs May through September: 11 of the 13 hail days on record fall in those 5 months (85%). July is the single busiest month, with 3 of them (23%). That peak sits inside the window rather than at either end. Hail has also been reported in March and April, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| March | 1 |
| April | 1 |
| May | 2 |
| June | 2 |
| July | 3 |
| August | 2 |
| September | 2 |
Recent Calumet County hail days
That day put 1 report on the map, the biggest 1 inch near Darboy. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-27 | 1.00″ | 1 |
| 2026-03-30 | 1.75″ | 2 |
| 2021-09-07 | 1.25″ | 3 |
| 2021-05-02 | 1.00″ | 1 |
| 2021-04-06 | 1.00″ | 1 |
| 2019-08-07 | 1.00″ | 1 |
| 2017-09-20 | 1.00″ | 1 |
| 2013-06-17 | 1.00″ | 1 |
How to read the Calumet County map
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.
Nearby counties
The nearest counties with a page of their own: Outagamie County (19 hail days), Winnebago County (17) and Brown County (16). Every one of them takes more hail than Calumet County.
Outagamie County · Winnebago County · Brown County
Back to the Wisconsin hail map or the U.S. hail map.
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Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Calumet County, Wisconsin only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.