Hail HistoryHome › Wisconsin › Walworth County › Delavan
Hail history for Delavan, WI
Hail has been reported within 10 miles of Delavan on 21 days since 2006. The largest stones measured 2.5 in (tennis ball) on May 2, 2018. Hail is most common here in May and June.
Recent hail near Delavan
| Date | Hail size | Where |
|---|---|---|
| Apr 15, 2026 | 1 in quarter | Elkhorn Airport 1 hail report · closest 7 mi from Delavan |
One row per day: the largest hail reported that day within 10 miles, the places and the number of reports.
Hail days near Delavan by year
When hail season peaks near Delavan
Of the 21 hail days since 2006, most fell in May (5) and June (5).
Largest hail storms near Delavan
May 2, 2018 · 2.5 in (tennis ball) · Williams Bay (6 mi from Delavan)
National Weather Service description (English): Wind driven ping pong size hail broke a window on the 90 foot dome of the Yerkes Observatory.May 22, 2011 · 1.75 in (golf ball) · Richmond (7 mi from Delavan)
Aug 30, 2013 · 1.5 in (ping pong ball) · Richmond (7 mi from Delavan)
May 12, 2014 · 1.5 in (ping pong ball) · Elkhorn (6 mi from Delavan)
Sep 7, 2021 · 1.5 in (ping pong ball) · Delavan (1 mi from Delavan)
Tornadoes within 10 miles of Delavan
| Date | Rating | Where |
|---|---|---|
| Apr 17, 2026 | EF1 | Richmond 7 mi from Delavan |
| Apr 17, 2026 | EF1 | Darien 4 mi from Delavan |
| Apr 17, 2026 | EF1 | Delavan 3 mi from Delavan |
| Apr 15, 2026 | EF1 | Delavan Lake 4 mi from Delavan |
| Jun 22, 2024 | EF1 | Delavan Airport 2 mi from Delavan |
| Jun 22, 2024 | EF1 | Linton 9 mi from Delavan |
| May 7, 2024 | EF0 | Walworth Big Foot Airport 10 mi from Delavan |
| May 7, 2024 | EF1 | Darien 5 mi from Delavan |
| Jun 1, 2023 | EF? | Walworth Big Foot Airport 6 mi from Delavan |
| Mar 31, 2023 | EF0 | Sharon 10 mi from Delavan |
| Mar 31, 2023 | EF0 | Richmond 6 mi from Delavan |
| Mar 31, 2023 | EF0 | Como 7 mi from Delavan |
Damaging thunderstorm winds near Delavan
80 reports of damaging thunderstorm wind within 10 miles of Delavan since 2006, on 55 days. The strongest measured gust was 74 mph on Aug 9, 2009.
| Date | Strongest gust | Where |
|---|---|---|
| Jul 3, 2026 | 100 mph, estimated | Darien, Sharon, Delavan Lake 5 wind reports |
| Jun 11, 2026 | 58 mph, estimated | Fontana 1 wind report |
| Apr 2, 2026 | 58 mph, estimated | Elkhorn 1 wind report |
| Jun 3, 2025 | 60 mph, estimated | Walworth Big Foot Airport 1 wind report |
| Mar 15, 2025 | 62 mph, measured | Walworth Big Foot Airport 1 wind report |
| Mar 14, 2025 | 77 mph, estimated | Richmond, Walworth Big Foot Airport 2 wind reports |
| Aug 6, 2024 | 70 mph, estimated | Wandawega, Millard 2 wind reports |
| Jul 14, 2024 | 70 mph, estimated | Millard 1 wind report |
| May 22, 2024 | 58 mph, estimated | Elkhorn Airport 1 wind report |
| May 21, 2024 | 58 mph, estimated | Wanoawega 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 Delavan; 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
- Janesville
33 hail days - Beloit
34 hail days - Crystal Lake
53 hail days - Waukesha
47 hail days - Rockford
53 hail days - Franklin
47 hail days - New Berlin
58 hail days - Algonquin
59 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 Delavan.
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