Hail history in Waukesha County, WI
Hail of 1 inch or larger was reported in Waukesha County on 6 days between Jan 1, 2025 and Oct 26, 2026. The largest was 2.50 in (tennis ball) on Jul 27, 2026, near 1 W Oconomowoc.
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Every hail day in Waukesha County
| Storm day | Largest hail | Reports | Near | |
|---|---|---|---|---|
| Aug 9, 2026 | 1.25 in (half dollar) | 2 | 2 E Mukwonago | Report for this date → |
| Jul 27, 2026 | 2.50 in (tennis ball) | 4 | 1 W Oconomowoc | Report for this date → |
| Apr 17, 2026 | 1.00 in (quarter) | 2 | Eagle | Report for this date → |
| Apr 14, 2026 | 2.00 in (hen egg) | 8 | 2 NNE Menomonee Falls | Report for this date → |
| May 15, 2025 | 2.00 in (hen egg) | 13 | Big Bend | Report for this date → |
| Apr 18, 2025 | 2.00 in (hen egg) | 12 | 1 E North Prairie | Report for this date → |
When hail falls in Waukesha 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.
- Eagle3 reports
- 1 W Oconomowoc2 reports
- 2 N Menomonee Falls2 reports
- Mukwonago2 reports
- 1 E New Berlin1 report
- 1 E North Prairie1 report
- 1 ENE Lac La Belle1 report
- 1 ESE Lac La Belle1 report
- 1 N Merton1 report
- 1 N Muskego1 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.