Hail history in Rock County, WI
Hail of 1 inch or larger was reported in Rock County on 7 days between Jan 1, 2025 and Oct 26, 2026. The largest was 2.75 in (baseball) on Apr 18, 2025, near 1 W Evansville.
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Every hail day in Rock County
| Storm day | Largest hail | Reports | Near | |
|---|---|---|---|---|
| Jun 24, 2026 | 1.25 in (half dollar) | 1 | 2 SE Milton | Report for this date → |
| Apr 17, 2026 | 2.00 in (hen egg) | 5 | 3 E Beloit | Report for this date → |
| Apr 2, 2026 | 1.50 in (ping pong ball) | 2 | 2 NNE Janesville | Report for this date → |
| Mar 10, 2026 | 1.00 in (quarter) | 1 | 1 SSW Beloit | Report for this date → |
| Aug 16, 2025 | 1.50 in (ping pong ball) | 7 | 2 W Janesville | Report for this date → |
| Apr 18, 2025 | 2.75 in (baseball) | 10 | 1 W Evansville | Report for this date → |
| Apr 17, 2025 | 2.00 in (hen egg) | 1 | Evansville | Report for this date → |
When hail falls in Rock County
Where hail was reported
Places named in the reports, given as distance and direction from the nearest town, as the National Weather Service logs them.
- 3 E Edgerton3 reports
- Edgerton2 reports
- Evansville2 reports
- 1 E Evansville1 report
- 1 N Clinton1 report
- 1 NNW Janesville1 report
- 1 SE Edgerton1 report
- 1 SSW Beloit1 report
- 1 W Evansville1 report
- 1 WNW Janesville1 report
More hail history in Wisconsin
See a sample satellite hail report →
Source and method
NOAA Storm Prediction Center preliminary local storm reports of hail 1 inch or larger, Jan 1, 2025 to Oct 26, 2026 (updated Oct 27, 2026). Dates are SPC storm days, which run from 12:00 UTC to 12:00 UTC (about 7 a.m. to 7 a.m. Central), so a late-night storm appears on the day it started. Reports come from spotters, the public and NWS offices: they can be revised, and a storm nobody reported is missing. SPC storm reports.
A Skybridge report goes further for one address and date: GOES satellite cloud-top and lightning data, NOAA MRMS radar hail size and these storm reports within 50 km, in one document reviewed by a person, with a code anyone can verify.