◆ ONALASKA, WI HAIL HISTORY · LA CROSSE COUNTY
Onalaska, WI hail history & hail map
Onalaska, Wisconsin has had 9 hail events in the past 5 years, with hail up to 1.25″ (Half Dollar). Most recent: Aug 18, 2026. Free hail map, storm dates and NWS/CoCoRaHS reports.
✓ Data compiled by a degreed meteorologist from NOAA & NWS sources
9Hail events in the past 5 years
1.25″Largest recorded hail · Half Dollar
1.25″Largest ground report (within 3 mi)
—Largest radar-estimated hail
Radar hail swaths (NOAA MRMS MESH) in the past 5 years over Onalaska, shaded by hail size; blue dots are ground reports.
Recent hail storm dates in Onalaska
| Date | Peak hail | Sources |
|---|---|---|
| Aug 18, 2026 | 1.25″ Half Dollar | 2 ground reports (max 1.25″) |
| Jun 6, 2026 | 1.00″ Quarter | 1 ground report (max 1.00″) |
| May 7, 2024 | 0.50″ Small | 1 ground report (max 0.50″) |
| Sep 12, 2023 | 0.25″ Small | 2 ground reports (max 0.25″) |
| Apr 5, 2023 | 0.50″ Small | 1 ground report (max 0.50″) |
| Aug 3, 2022 | 0.38″ Small | 1 ground report (max 0.38″) |
| Jun 15, 2022 | 0.50″ Small | 1 ground report (max 0.50″) |
| May 20, 2022 | 0.50″ Small | 4 ground reports (max 0.50″) |
| May 19, 2022 | 0.88″ Nickel | 1 ground report (max 0.88″) |
More Wisconsin hail history
All Wisconsin cities & hail days →
Events count days with NOAA MRMS radar hail over Onalaska (43.870, -91.230) 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.