Hail HistoryHome › Wisconsin › Jefferson County › Waterloo
Hail history for Waterloo, WI
Hail has been reported within 10 miles of Waterloo on 26 days since 2006. The largest stones measured 4.25 in on Apr 13, 2006. Hail is most common here in May and April.
Recent hail near Waterloo
| Date | Hail size | Where |
|---|---|---|
| Apr 14, 2026 | 2 in hen egg | Marshall, London, Waterloo 6 hail reports · closest near the center of Waterloo |
| Apr 18, 2025 | 1.75 in golf ball | Milford, Hoopers, Lake Mills 3 hail reports · closest 5 mi from Waterloo |
One row per day: the largest hail reported that day within 10 miles, the places and the number of reports.
Hail days near Waterloo by year
When hail season peaks near Waterloo
Of the 26 hail days since 2006, most fell in May (6) and April (5).
Largest hail storms near Waterloo
Apr 13, 2006 · 4.25 in · Lake Mills (5 mi from Waterloo)
Apr 14, 2026 · 2 in (hen egg) · Marshall (5 mi from Waterloo)
National Weather Service description (English): Trained spotter reports 2 inch diameter hail near Marshall.Aug 24, 2006 · 1.75 in (golf ball) · Janesville (9 mi from Waterloo)
Jun 2, 2010 · 1.75 in (golf ball) · Lake Mills (9 mi from Waterloo)
Apr 18, 2025 · 1.75 in (golf ball) · Milford (9 mi from Waterloo)
Tornadoes within 10 miles of Waterloo
| Date | Rating | Where |
|---|---|---|
| Jun 22, 2024 | EF1 | Marshall 5 mi from Waterloo |
| Jun 22, 2024 | EF0 | Waterloo 2 mi from Waterloo |
| Jun 22, 2024 | EF1 | Hubbleton 7 mi from Waterloo |
| Oct 12, 2022 | EF0 | Grellton 9 mi from Waterloo |
| Jul 29, 2021 | EF0 | Grellton 9 mi from Waterloo |
| Aug 9, 2018 | EF0 | Deerfield 10 mi from Waterloo |
| Jul 22, 2010 | EF0 | Waterloo 4 mi from Waterloo |
| Jul 22, 2010 | EF0 | York Center 7 mi from Waterloo |
Damaging thunderstorm winds near Waterloo
44 reports of damaging thunderstorm wind within 10 miles of Waterloo since 2006, on 31 days. The strongest measured gust was 84 mph on Jun 28, 2008.
| Date | Strongest gust | Where |
|---|---|---|
| Jun 10, 2026 | 60 mph, estimated | Deansville 1 wind report |
| Apr 14, 2026 | 81 mph, estimated | Waterloo 1 wind report |
| Jul 16, 2025 | 70 mph, estimated | East Bristol 1 wind report |
| Mar 15, 2025 | 63 mph, estimated | Hubbleton, Waterloo 4 wind reports |
| Jun 21, 2024 | 58 mph, estimated | Waterloo 1 wind report |
| May 7, 2024 | 64 mph, estimated | Sun Prairie 1 wind report |
| Sep 25, 2022 | 58 mph, estimated | Lake Mills 1 wind report |
| Jun 15, 2022 | 75 mph, estimated | Columbus, Waterloo 2 wind reports |
| Jun 13, 2022 | 64 mph, estimated | Lake Mills 1 wind report |
| May 13, 2022 | 58 mph, estimated | Deansville 1 wind report |
Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.
Filing a roof or car hail claim?
Insurers ask for the date of loss. The dates on this page are when hail was reported near Waterloo; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.
Nearby cities
- Sun Prairie
44 hail days - Watertown
32 hail days - Beaver Dam
32 hail days - Madison
57 hail days - Oconomowoc
36 hail days - Whitewater
25 hail days - Fitchburg
42 hail days - Janesville
33 hail days
Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then). Distances are measured from the center of Waterloo.
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