Fond du Lac County was hit as recently as 2026-06-16, 45 days ago. Fond du Lac County is hit in about half the years on record. The largest stone on record here is 3 inches, a teacup and 3 times the National Weather Service's 1 inch severe criterion, reported on 2021-09-07 near North Fond Du Lac.
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 2026-06-16, around Dundee. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Fond du Lac 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 13 separate hail days here since 2010 -- 0.8 a year over 17 years of record. Those days carry 27 separate reports between them, two or three on a typical one. 8 of those 17 years produced none at all. The busiest single year was 2026, with 2 hail days. The last five years track the long-run rate, with 3 days since 2022.
3 of the 13 days reached 2 inches or more -- 23%, or about one hail day in 4, the last on 2021-09-07. Those big days do not follow the county's usual calendar: most of them fall in July, not August.
Across the whole of Wisconsin, see the Wisconsin hail map and history.
Reports cluster nearest Fond Du Lac -- 4 of the county's 13 hail days -- then Ripon (3), Eden (2) and Taycheedah (2).
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Fond Du Lac | 3 | 1.75″ |
| Ripon | 2 | 2.00″ |
| 2 Nne North Fond Du Lac | 1 | 3.00″ |
| 4 N Waupun | 1 | 2.00″ |
| 4 Wsw Fond Du Lac | 1 | 2.00″ |
The season runs May through August: 11 of the 13 hail days on record fall in those 4 months (85%). August is the single busiest month, with 5 of them (38%). That peak closes the window: the season builds all the way to its worst month and then stops. 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 | 1 |
| May | 1 |
| June | 4 |
| July | 1 |
| August | 5 |
| September | 1 |
That day put 1 report on the map, the biggest 1 inch near Dundee. 2 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-06-16 | 1.00″ | 1 |
| 2026-04-14 | 1.00″ | 1 |
| 2025-05-15 | 1.25″ | 1 |
| 2021-09-07 | 3.00″ | 5 |
| 2019-08-07 | 1.00″ | 1 |
| 2018-08-16 | 1.00″ | 1 |
| 2018-07-13 | 2.00″ | 3 |
| 2017-08-10 | 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 3 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: Winnebago County (17 hail days), Dodge County (30) and Sheboygan County (17). Every one of them takes more hail than Fond du Lac County.
Winnebago County · Dodge County · Sheboygan County
Back to the Wisconsin hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Fond du Lac County, Wisconsin only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.