◆ MONONA, WI HAIL HISTORY · DANE COUNTY
Monona, WI hail history & hail map
Monona, Wisconsin has had 10 hail events in the past 5 years, with hail up to 4.00″ (Softball). Most recent: Apr 15, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
10Hail events in the past 5 years
4.00″Largest recorded hail · Softball
4.00″Largest ground report (within 3 mi)
1.75″Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Monona, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Monona
| Date | Peak hail | Sources |
|---|---|---|
| Apr 15, 2026 | 2.75″ Baseball | 3 ground reports (max 2.75″) |
| Apr 14, 2026 | 4.00″ Softball | Radar 1.50″ · 20 ground reports (max 4.00″) |
| May 15, 2025 | 2.25″ Golf Ball | 5 ground reports (max 2.25″) |
| Apr 18, 2025 | 0.25″ Small | 1 ground report (max 0.25″) |
| Mar 28, 2025 | 0.25″ Small | 1 ground report (max 0.25″) |
| Oct 23, 2023 | 1.50″ Ping Pong Ball | Radar 0.75″ · 2 ground reports (max 1.50″) |
| Nov 4, 2022 | 1.00″ Quarter | 2 ground reports (max 1.00″) |
| Sep 20, 2022 | 1.00″ Quarter | Radar 0.75″ · 3 ground reports (max 1.00″) |
| Jul 24, 2022 | 1.00″ Quarter | Radar 0.75″ · 1 ground report (max 1.00″) |
| Jun 13, 2022 | 1.75″ Golf Ball | Radar 1.75″ · 2 ground reports (max 1.25″) |
More Wisconsin hail history
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Events count days with NOAA MRMS radar hail over Monona (43.090, -89.300) 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.