The most recent reported hail day was 2026-04-27, 95 days ago. Sauk County has recorded hail in nearly every year on the archive. The largest stone on record here is 4.25 inches and 4.2 times the National Weather Service's 1 inch severe criterion, reported on 2011-06-05 near Loganville.
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 2026-04-27, around Merrimac. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Sauk 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 20 separate hail days here since 2010 -- 1.2 a year over 17 years of record. Those days carry 40 separate reports between them, two or three on a typical one. 2 of those 17 years produced none at all. The busiest single year was 2025, with 2 hail days. The last five years track the long-run rate, with 7 days since 2022.
Most hail here stays under 2 inches: only 1 of the 20 days on record passed it, 5%, the last on 2011-06-05. Those big days do not follow the county's usual calendar: most of them fall in June, not April. Golf-ball size is rarer still: 1.75 inches or more on 3 of the 20 days.
Across the whole of Wisconsin, see the Wisconsin hail map and history.
Reports cluster nearest Baraboo -- 5 of the county's 20 hail days -- then Sauk City (5), Reedsburg (3), Loganville (2) and North Freedom (2). Beyond those, NOAA names Merrimac, Plain, Wisconsin Dells, Lake Delton, Spring Green and Prairie Du Sac on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Sauk City | 3 | 1.50″ |
| Reedsburg | 2 | 1.50″ |
| Loganville | 1 | 4.25″ |
| 1 S Reedsburg | 1 | 4.00″ |
| 1 S North Freedom | 1 | 2.75″ |
The season runs March through June: 17 of the 20 hail days on record fall in those 4 months (85%). April is the single busiest month, with 7 of them (35%). That peak sits inside the window rather than at either end. Hail has also been reported in July and September, outside that window. Reports span 6 of the 12 calendar months; the other 6 have never produced one.
| Month | Hail days |
|---|---|
| March | 2 |
| April | 7 |
| May | 3 |
| June | 5 |
| July | 2 |
| September | 1 |
That day put 1 report on the map, the biggest 1 inch near Merrimac. 1 hail day has already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-04-27 | 1.00″ | 1 |
| 2025-05-15 | 1.75″ | 6 |
| 2025-04-17 | 1.25″ | 2 |
| 2024-06-24 | 1.25″ | 1 |
| 2023-04-19 | 1.00″ | 1 |
| 2023-04-04 | 1.00″ | 1 |
| 2022-03-05 | 1.00″ | 1 |
| 2021-07-14 | 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 4.25 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: Columbia County (20 hail days), Richland County (15) and Iowa County (18). Sauk County sits in between.
Columbia County · Richland County · Iowa 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, Sauk County, Wisconsin only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.