Fond du Lac County, Wisconsin Hail Map & History
Fond du Lac County was hit as recently as 2026-08-18, 27 days ago. Fond du Lac County is hit in about half the years on record. The largest stone on record here is 3.25 inches and 3.2 times the National Weather Service's 1 inch severe criterion, reported on 2026-07-01 near 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 2026-08-18, around Fond Du Lac. 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.
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See call-center options ->How often it hails in Fond du Lac County
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 47 separate reports between them, better than three on a typical one. 8 of those 17 years produced none at all. One year dominates the record: 2026 alone produced 4 of the 15 days. The last five years track the long-run rate, with 5 days since 2022.
Roof-killing hail is routine here: 4 of the 15 days reached 2 inches or more, 27% of them, the last on 2026-07-01. 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.
Hardest-hit places in Fond du Lac County
Reports cluster nearest Fond Du Lac -- 6 of the county's 15 hail days -- then Eden (3), Ripon (3), Brandon (2) and Taycheedah (2). That one town is named on 40% of them.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Fond Du Lac | 3 | 1.75″ |
| 3 SE Fond Du Lac | 2 | 3.00″ |
| Ripon | 2 | 2.00″ |
| 4 S Fond Du Lac | 1 | 3.25″ |
| 2 Nne North Fond Du Lac | 1 | 3.00″ |
When it hails in Fond du Lac County
The season runs June through August: 12 of the 15 hail days on record fall in those 3 months (80%). August is the single busiest month, with 6 of them (40%). 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, May 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 | 2 |
| August | 6 |
| September | 1 |
Recent Fond du Lac County hail days
That day put 2 reports on the map, the biggest 1 inch near Fond Du Lac. 4 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-08-18 | 1.00″ | 2 |
| 2026-07-01 | 3.25″ | 18 |
| 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 |
How to read the Fond du Lac 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 3.25 inches, which is the purple band. Look up a street address with the hail history by address tool.
Nearby counties
The nearest counties with a page of their own: Dodge County (32 hail days), Winnebago County (17) and Calumet County (13). Fond du Lac County sits in between.
Dodge County · Winnebago County · Calumet 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, Fond du Lac County, Wisconsin only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.