Hail HistoryHail history for Union County, IA
89 hail reports in Union County since 2006 on 45 days. The largest stones measured 3 in (tea cup) on Jun 18, 2021.
Cities in Union County
Recent hail in Union County
| Date | Hail size | Where |
|---|---|---|
| Sep 16, 2025 | 0.88 in nickel | Afton 1 hail report |
| Apr 17, 2025 | 1 in quarter | Afton, Thayer 3 hail reports |
One row per day: the largest hail reported in the county that day, the places and the number of reports.
Hail days in Union County by year
When hail season peaks in Union County
Damaging thunderstorm winds in Union County
82 reports of damaging thunderstorm wind in Union County since 2006, on 50 days. The strongest measured gust was 74 mph on Aug 9, 2009.
| Date | Strongest gust | Where |
|---|---|---|
| Sep 14, 2026 | 63 mph, measured | Creston 1 wind report |
| Jul 8, 2025 | 60 mph, estimated | Afton 1 wind report |
| Sep 19, 2024 | 60 mph, estimated | Thayer 1 wind report |
| Jun 25, 2024 | 62 mph, measured | Lorimor 1 wind report |
| Apr 30, 2024 | 58 mph, estimated | Creston 1 wind report |
| Apr 26, 2024 | 72 mph, measured | Lorimor 1 wind report |
| Jul 12, 2023 | 63 mph, estimated | Creston, Cromwell, Lorimor 4 wind reports |
| Jun 29, 2023 | 63 mph, measured | Talmage 1 wind report |
| Jun 17, 2023 | 60 mph, measured | Creston Airport 1 wind report |
| Jun 7, 2022 | 68 mph, measured | Creston Airport, Creston 3 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 Union 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).