Wisconsin Hail Map & History
Wisconsin was hit as recently as 2026-09-03, 11 days ago. NOAA's Storm Prediction Center has logged 427 separate hail days in Wisconsin since 2010, across 3,129 individual storm reports. 88 of those days brought hail 2 inches or larger, and the largest stone on record is 4.5 inches on 2026-07-27 near Gresham, Shawano.
Wisconsin's southern tier -- Milwaukee and Madison -- absorbs late-spring and summer hail from plains-fed convection. Pick a date below to see the NOAA radar swath and reports, or check a specific address.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Wisconsin. Radar-indicated, not a guarantee of damage.
A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Wisconsin 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 ->Hail history in Wisconsin
Wisconsin averages 25 reported hail days a year across 17 years of NOAA archive, about 5 of them carrying hail 2″ or larger -- the size that routinely totals roofs. Major metros watched here: Milwaukee, Madison, Green Bay, Appleton.
When it hails in Wisconsin
Wisconsin's busiest hail month is July, with 92 of its 427 hail days on record. April through August holds 352 of them, 82% of the record.
| Month | Hail days since 2010 |
|---|---|
| February | 2 |
| March | 19 |
| April | 40 |
| May | 66 |
| June | 90 |
| July | 92 |
| August | 64 |
| September | 39 |
| October | 11 |
| November | 3 |
| December | 1 |
Top Wisconsin counties by hail frequency
| County | Hail days since 2010 | Largest stone |
|---|---|---|
| Dane | 52 | 4.00″ |
| Trempealeau | 43 | 3.00″ |
| Waukesha | 35 | 3.00″ |
| Dodge | 32 | 2.75″ |
| Rock | 32 | 2.75″ |
| Marathon | 31 | 3.00″ |
Wisconsin hail history by county
55 Wisconsin counties have at least 13 NOAA hail days on record since 2010 -- enough archive signal for a page of their own. Ordered by hail days.
Dane County · Trempealeau County · Waukesha County · Dodge County · Rock County · Marathon County · Sawyer County · Milwaukee County · St. Croix County · Grant County · Walworth County · La Crosse County · Bayfield County · Douglas County · Jefferson County · Monroe County · Washington County · Waupaca County · Barron County · Chippewa County · Taylor County · Dunn County · Burnett County · Clark County · Marinette County · Price County · Adams County · Columbia County · Jackson County · Portage County · Sauk County · Wood County · Buffalo County · Eau Claire County · Washburn County · Oconto County · Outagamie County · Pierce County · Vernon County · Green County · Iowa County · Juneau County · Shawano County · Sheboygan County · Oneida County · Polk County · Racine County · Winnebago County · Brown County · Ashland County · Fond du Lac County · Richland County · Waushara County · Vilas County · Calumet County
Recent Wisconsin hail days
| Date | Max hail | Reports |
|---|---|---|
| 2026-09-03 | 1.75″ | 3 |
| 2026-08-25 | 1.50″ | 1 |
| 2026-08-18 | 1.25″ | 4 |
| 2026-08-11 | 1.50″ | 4 |
| 2026-08-09 | 1.50″ | 6 |
| 2026-07-27 | 4.50″ | 35 |
| 2026-07-20 | 1.00″ | 2 |
| 2026-07-17 | 1.00″ | 1 |
How to read the Wisconsin map
The colored swath is NOAA's MRMS radar estimate of the largest hail in each ~1 km cell; the dots are individual SPC ground reports. Yellow is around an inch, red is 1.5 to 2″, and purple is 2″ and up -- see how hail size maps to roof damage. Click any spot on the map to see the hail history at that point, or look up a full street address on the hail history by address tool. Today's nationwide activity is on today's hail report.
Nearby states
Tennessee · Florida · Alabama · Ohio · South Carolina · Indiana
FAQ
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Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Wisconsin only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.