173
Recorded events
0
Direct deaths
0
Direct injuries
$4.5M
Property damage
Hail in Rock County, Wisconsin: 173 recorded events between 1961 and 2026. The strongest on record measured 3. That places the county #777 nationally and #13 statewide for this hazard.
Decade by decade
Hail in Rock County, Wisconsin: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for hail in Rock County is the 2000s, when 54 of the county's 173 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Rock County archive, hail makes up 23.5% of all recorded severe weather across 9 hazard types. Nationally the county sits at #777 for this hazard and #13 within Wisconsin, putting it in the 75.0 percentile of all U.S. counties.
Seasonality
Events by month
Apr is the peak month for hail in Rock County with 34 recorded events, while Jan is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Apr 17, 2026 | BELOIT | 2 | $0 |
| Apr 17, 2026 | MILTON | 1.75 | $0 |
| Apr 17, 2026 | BELOIT | 1.75 | $0 |
| Apr 17, 2026 | DOWNTOWN JANESVILLE | 1.5 | $0 |
| Apr 2, 2026 | DOWNTOWN JANESVILLE | 0.88 | $0 |
| Apr 2, 2026 | DOWNTOWN JANESVILLE | 0.75 | $0 |
| Apr 2, 2026 | DOWNTOWN JANESVILLE | 1.5 | $0 |
| Apr 2, 2026 | DOWNTOWN JANESVILLE | 1.25 | $0 |
| Mar 10, 2026 | BELOIT | 1 | $0 |
| Aug 16, 2025 | CLINTON | 1.5 | $0 |
Other hazards here
More from Rock County
- Thunderstorm Wind 375
- Flood 58
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Corn and soybean crops were severely damaged or destroyed by wind -driven large hail up to 1.75 inches in diameter in the area from 1 mile northeast of Milton to about 7 miles northeast of Milton. The damage swath was about 2 miles wide.
Quick answers
Frequently asked
How many hail events are on record in Rock County, Wisconsin?
173 hail events are recorded in Rock County between 1961 and 2026, causing 0 direct deaths.
What is the strongest hail recorded in Rock County?
The strongest hail on record in Rock County measured 3.
Where does the hail data for Rock County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Hail in Rock County, Wisconsin.” Severe Weather History. severeweatherhistory.com/county/wisconsin/rock-county/hail/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.