The most recent reported hail day was 2025-05-15 -- 1 year ago, with nothing reported since. Columbia County is hit in most years. The largest stone on record here is 2.5 inches, a tennis ball and 2.5 times the National Weather Service's 1 inch severe criterion, reported on 2015-07-12 near Portage.
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 2025-05-15, around Portage. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Columbia 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 20 separate hail days here since 2010 -- 1.2 a year over 17 years of record. They carry 29 reports in total: most hail days here are logged from a single spot. 6 of those 17 years produced none at all. The busiest single year was 2018, with 3 hail days. The last five years track the long-run rate, with 6 days since 2022.
Most hail here stays under 2 inches: only 1 of the 20 days on record passed it, 5%, the last on 2015-07-12. Those big days do not follow the county's usual calendar: most of them fall in July, not May. Golf-ball size is rarer still: 1.75 inches or more on 4 of the 20 days.
Across the whole of Wisconsin, see the Wisconsin hail map and history.
Reports cluster nearest Portage -- 6 of the county's 20 hail days -- then Poynette (4), Fall River (4), Wisconsin Dells (2) and Pardeeville (2).
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Portage | 3 | 2.50″ |
| Fall River | 3 | 1.00″ |
| 1 Ne Wisconsin Dells | 1 | 1.75″ |
| 2 N Poynette | 1 | 1.75″ |
| 5 Nw Poynette | 1 | 1.75″ |
The season runs April through July: 16 of the 20 hail days on record fall in those 4 months (80%). May 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 August, September, October and November, outside that window. Reports span 8 of the 12 calendar months; the other 4 have never produced one.
| Month | Hail days |
|---|---|
| April | 5 |
| May | 7 |
| June | 1 |
| July | 3 |
| August | 1 |
| September | 1 |
| October | 1 |
| November | 1 |
That day put 1 report on the map, the biggest 1 inch near Portage. No hail day has been reported here yet this year.
| Date | Max hail | Reports |
|---|---|---|
| 2025-05-15 | 1.00″ | 1 |
| 2024-05-21 | 1.00″ | 1 |
| 2024-04-27 | 1.00″ | 1 |
| 2023-07-16 | 1.00″ | 1 |
| 2023-04-19 | 1.75″ | 4 |
| 2022-11-04 | 1.00″ | 1 |
| 2021-09-07 | 1.50″ | 1 |
| 2018-10-09 | 1.50″ | 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 2.5 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: Sauk County (20 hail days), Dane County (52) and Dodge County (30). Columbia County sits in between.
Sauk County · Dane County · Dodge 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, Columbia County, Wisconsin only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.