Hail HistoryHail history for Johnson County, IA
180 hail reports in Johnson County since 2006 on 71 days. The largest stones measured 2.75 in (baseball) on Mar 10, 2026.
Cities in Johnson County
- Iowa City
61 hail days - Coralville
59 hail days - North Liberty
52 hail days - Tiffin
48 hail days - Solon
38 hail days
Recent hail in Johnson County
| Date | Hail size | Where |
|---|---|---|
| Apr 14, 2026 | 1.5 in ping pong ball | Iowa City 5 hail reports |
| Apr 2, 2026 | 1.75 in golf ball | Iowa City Muni Airport 1 hail report |
| Mar 31, 2026 | 0.88 in nickel | University Hgts 1 hail report |
| Mar 15, 2026 | 1.5 in ping pong ball | Hills, Oasis 2 hail reports |
| Mar 10, 2026 | 2.75 in baseball | Oasis, University Hgts, Iowa City Muni Airport 12 hail reports |
| Jul 10, 2025 | 1 in quarter | Iowa City, Iowa City Muni Airport 2 hail reports |
| Apr 17, 2025 | 0.75 in penny | Tiffin 1 hail report |
| Oct 24, 2024 | 1 in quarter | Amish, Tiffin 4 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 Johnson County by year
When hail season peaks in Johnson County
Damaging thunderstorm winds in Johnson County
190 reports of damaging thunderstorm wind in Johnson County since 2006, on 68 days. The strongest measured gust was 83 mph on Aug 28, 2018.
| Date | Strongest gust | Where |
|---|---|---|
| Sep 8, 2026 | damage reported | Swisher 1 wind report |
| Aug 12, 2026 | damage reported | Oxford 1 wind report |
| Jun 17, 2026 | 70 mph, measured | North Liberty 5 wind reports |
| Jun 10, 2026 | 64 mph, estimated | Iowa City, Iowa City Muni Airport, Amish 3 wind reports |
| Apr 23, 2026 | 69 mph, measured | Iowa City Muni Airport, Iowa City 3 wind reports |
| Apr 17, 2026 | 60 mph, measured | Lone Tree 1 wind report |
| Aug 15, 2025 | 70 mph, estimated | North Liberty, University Hgts, Iowa City Muni Airport 5 wind reports |
| Jul 29, 2025 | 63 mph, measured | Iowa City Muni Airport 1 wind report |
| Jul 10, 2025 | 75 mph, estimated | Iowa City Muni Airport 1 wind report |
| Jul 15, 2024 | 75 mph, estimated | North Liberty, Swisher, Iowa City 5 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 Johnson 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).