Hail HistoryHail history for Cass County, IA
64 hail reports in Cass County since 2006 on 43 days. The largest stones measured 3 in (tea cup) on Sep 18, 2010.
Cities in Cass County
Recent hail in Cass County
| Date | Hail size | Where |
|---|---|---|
| Sep 6, 2026 | 1 in quarter | Atlantic 1 hail report |
| Jun 15, 2025 | 1.5 in ping pong ball | Griswold 1 hail report |
| Apr 17, 2025 | 1 in quarter | Lewis 1 hail report |
One row per day: the largest hail reported in the county that day, the places and the number of reports.
Hail days in Cass County by year
When hail season peaks in Cass County
Damaging thunderstorm winds in Cass County
107 reports of damaging thunderstorm wind in Cass County since 2006, on 65 days. The strongest measured gust was 69 mph on Mar 14, 2025.
| Date | Strongest gust | Where |
|---|---|---|
| Jul 7, 2025 | 64 mph, estimated | Massena, Griswold 2 wind reports |
| Jun 23, 2025 | 60 mph, estimated | Atlantic 1 wind report |
| Jun 16, 2025 | 58 mph, estimated | Atlantic 1 wind report |
| Apr 28, 2025 | 58 mph, estimated | Anita 1 wind report |
| Mar 14, 2025 | 69 mph, measured | Cumberland 1 wind report |
| Jul 31, 2024 | 59 mph, measured | Atlantic Airport 1 wind report |
| May 24, 2024 | 61 mph, measured | Cumberland 1 wind report |
| May 21, 2024 | 70 mph, estimated | Lewis 1 wind report |
| May 7, 2024 | 59 mph, measured | Atlantic Airport 1 wind report |
| Jun 24, 2023 | 64 mph, estimated | Marne 2 wind reports |
Severe thunderstorm wind means gusts of 58 mph or more, or wind that caused damage. Measured gusts come from weather stations; estimated ones from spotters and damage surveys.
Filing a roof or car hail claim?
Insurers ask for the date of loss. The dates on this page are when hail was reported near Cass County; hail can hit one street and miss the next, so a report is not proof of damage at your address. A licensed roofer or your insurance adjuster can inspect the roof. Many policies set a time limit for filing a claim — check yours.
Data: NOAA NCEI Storm Events Database (final records through Jun 30, 2026) and National Weather Service Local Storm Reports (preliminary, since then).