◆ COTTAGE GROVE, WI HAIL HISTORY · DANE COUNTY
Cottage Grove, WI hail history & hail map
Cottage Grove, Wisconsin has had 4 hail events in the past 5 years, with hail up to 2.50″ (Tennis Ball). Most recent: Apr 14, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
4Hail events in the past 5 years
2.50″Largest recorded hail · Tennis Ball
2.50″Largest ground report (within 3 mi)
1.50″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Cottage Grove, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Cottage Grove
| Date | Peak hail | Sources |
|---|---|---|
| Apr 14, 2026 | 2.50″ Tennis Ball | Radar 1.25″ · 3 ground reports (max 2.50″) |
| Apr 18, 2025 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| Sep 20, 2022 | 0.88″ Nickel | 1 ground report (max 0.88″) |
| Jun 13, 2022 | 1.50″ Ping Pong Ball | Radar 1.50″ · 1 ground report (max 1.25″) |
More Wisconsin hail history
All Wisconsin cities & hail days →
Events count days with NOAA MRMS radar hail over Cottage Grove (43.090, -89.200) or an NWS / CoCoRaHS hail report within 3 miles. Data window: NOAA MRMS radar hail swaths Oct 2021 – Nov 2026; NWS / NCEI Storm Events reports Nov 2024 – Jul 2026; CoCoRaHS volunteer reports Oct 2021 – present. Radar hail sizes are estimates, not ground truth; hail at any single address can differ.