Hail history · Iowa
Iowa hail history
Hail days, largest hail and the latest storms for 99 Iowa counties, from NOAA storm reports since 2010.
2,938 hail reports and 4,962 damaging-wind reports in Iowa since 2010; the largest hail was 4.50" (grapefruit) in Delaware County on Aug 7, 2026. Counties are sorted by the number of days with hail reports.
| County | Hail days since 2010 | Last 5 years | Largest hail | Last hail |
|---|---|---|---|---|
| Polk County | 34 | 19 | 3.25" | Sep 8, 2026 |
| Pottawattamie County | 30 | 18 | 4.00" | Jun 13, 2026 |
| Warren County | 29 | 17 | 3.00" | Oct 8, 2026 |
| Story County | 28 | 17 | 2.75" | Jul 20, 2026 |
| Clarke County | 26 | 12 | 3.50" | Jun 11, 2026 |
| Plymouth County | 26 | 14 | 2.75" | May 31, 2026 |
| Sioux County | 26 | 12 | 2.50" | Oct 8, 2026 |
| Cerro Gordo County | 24 | 10 | 1.75" | Aug 7, 2026 |
| Dallas County | 24 | 10 | 3.00" | Oct 8, 2026 |
| Johnson County | 23 | 15 | 2.75" | Apr 14, 2026 |
| Lee County | 23 | 12 | 4.00" | May 4, 2026 |
| Marion County | 23 | 15 | 2.75" | Jun 11, 2026 |
| Webster County | 23 | 5 | 2.00" | Jul 2, 2026 |
| Woodbury County | 23 | 17 | 2.00" | Jul 8, 2026 |
| Clay County | 22 | 11 | 3.00" | Aug 9, 2026 |
| O'Brien County | 22 | 17 | 2.50" | Jun 28, 2026 |
| Jasper County | 21 | 13 | 2.75" | Apr 17, 2026 |
| Benton County | 20 | 11 | 2.00" | Aug 12, 2026 |
| Cherokee County | 20 | 11 | 2.00" | Oct 8, 2026 |
| Hancock County | 20 | 12 | 3.00" | May 15, 2026 |
| Linn County | 20 | 11 | 2.75" | Jul 20, 2026 |
| Mills County | 20 | 14 | 2.50" | Jun 13, 2026 |
| Scott County | 20 | 13 | 4.00" | May 18, 2026 |
| Van Buren County | 20 | 12 | 3.00" | Mar 26, 2026 |
| Kossuth County | 19 | 8 | 2.50" | May 15, 2026 |
| Taylor County | 18 | 8 | 2.75" | Jun 11, 2026 |
| Adair County | 17 | 9 | 4.00" | Mar 14, 2025 |
| Black Hawk County | 17 | 10 | 3.00" | Aug 7, 2026 |
| Boone County | 17 | 8 | 2.75" | Jul 20, 2026 |
| Butler County | 17 | 8 | 2.50" | Sep 4, 2026 |
| Page County | 17 | 8 | 3.50" | Jun 11, 2026 |
| Clinton County | 16 | 9 | 2.00" | Jun 28, 2026 |
| Dickinson County | 16 | 8 | 2.50" | Aug 9, 2026 |
| Dubuque County | 16 | 10 | 2.00" | Jul 2, 2026 |
| Floyd County | 16 | 6 | 3.25" | Jun 10, 2026 |
| Fremont County | 16 | 8 | 3.00" | Jul 3, 2026 |
| Harrison County | 16 | 10 | 3.00" | May 31, 2026 |
| Lyon County | 16 | 6 | 4.00" | May 24, 2026 |
| Marshall County | 16 | 10 | 1.75" | Apr 17, 2026 |
| Washington County | 16 | 9 | 2.50" | Aug 7, 2026 |
| Cedar County | 15 | 10 | 2.50" | Aug 7, 2026 |
| Union County | 15 | 9 | 3.00" | Jun 11, 2026 |
| Clayton County | 14 | 6 | 2.50" | Sep 4, 2026 |
| Fayette County | 14 | 7 | 3.50" | Jul 2, 2026 |
| Greene County | 14 | 6 | 2.50" | Jun 1, 2026 |
| Guthrie County | 14 | 5 | 1.75" | Oct 8, 2026 |
| Ida County | 14 | 6 | 2.50" | May 15, 2026 |
| Iowa County | 14 | 9 | 2.75" | Aug 7, 2026 |
| Monona County | 14 | 6 | 3.50" | Mar 6, 2026 |
| Montgomery County | 14 | 7 | 3.00" | May 16, 2026 |
| Palo Alto County | 14 | 7 | 3.00" | Apr 13, 2026 |
| Bremer County | 13 | 9 | 2.75" | Apr 14, 2026 |
| Buchanan County | 13 | 9 | 3.25" | Aug 7, 2026 |
| Calhoun County | 13 | 5 | 1.50" | Oct 8, 2026 |
| Cass County | 13 | 8 | 2.00" | Sep 6, 2026 |
| Des Moines County | 13 | 7 | 2.50" | Aug 15, 2024 |
| Franklin County | 13 | 6 | 2.00" | Sep 16, 2025 |
| Grundy County | 13 | 6 | 1.75" | Apr 14, 2026 |
| Henry County | 13 | 6 | 2.00" | Aug 12, 2026 |
| Humboldt County | 13 | 8 | 2.50" | May 15, 2026 |
| Jones County | 13 | 9 | 3.00" | Apr 17, 2026 |
| Keokuk County | 13 | 7 | 3.00" | Aug 7, 2026 |
| Madison County | 13 | 9 | 2.75" | Apr 15, 2026 |
| Osceola County | 13 | 8 | 1.75" | Apr 13, 2026 |
| Pocahontas County | 13 | 5 | 2.75" | May 15, 2026 |
| Tama County | 13 | 7 | 2.50" | Apr 17, 2026 |
| Hardin County | 12 | 7 | 1.75" | Apr 14, 2026 |
| Muscatine County | 12 | 5 | 2.00" | May 7, 2023 |
| Ringgold County | 12 | 8 | 3.00" | Sep 6, 2026 |
| Shelby County | 12 | 7 | 2.00" | Jun 1, 2026 |
| Winnebago County | 12 | 6 | 2.50" | Aug 7, 2026 |
| Buena Vista County | 11 | 6 | 1.75" | May 15, 2026 |
| Monroe County | 11 | 7 | 2.00" | Jun 11, 2026 |
| Appanoose County | 10 | 6 | 3.00" | Apr 17, 2026 |
| Poweshiek County | 10 | 6 | 2.75" | Apr 17, 2026 |
| Sac County | 10 | 5 | 2.75" | Oct 8, 2026 |
| Carroll County | 9 | 5 | 2.50" | Apr 23, 2026 |
| Crawford County | 9 | 5 | 2.75" | Apr 23, 2026 |
| Delaware County | 9 | 7 | 4.50" | Aug 7, 2026 |
| Lucas County | 9 | 6 | 2.50" | Apr 17, 2026 |
| Mahaska County | 9 | 6 | 2.75" | Jun 11, 2026 |
| Wapello County | 9 | 5 | 2.75" | Apr 14, 2026 |
| Worth County | 9 | 6 | 1.75" | Aug 7, 2026 |
| Chickasaw County | 8 | 2 | 2.00" | Apr 14, 2026 |
| Emmet County | 8 | 6 | 2.75" | May 15, 2026 |
| Howard County | 8 | 4 | 3.50" | Jul 8, 2026 |
| Jackson County | 8 | 7 | 3.00" | Jul 3, 2026 |
| Jefferson County | 8 | 5 | 2.00" | Aug 7, 2026 |
| Hamilton County | 7 | 2 | 2.00" | Jul 20, 2026 |
| Mitchell County | 7 | 4 | 2.50" | Sep 22, 2025 |
| Adams County | 6 | 5 | 1.75" | Apr 17, 2025 |
| Decatur County | 6 | 3 | 2.00" | May 19, 2025 |
| Louisa County | 6 | 3 | 2.50" | Mar 31, 2026 |
| Wayne County | 6 | 1 | 2.75" | May 24, 2024 |
| Winneshiek County | 6 | 4 | 2.00" | Aug 16, 2025 |
| Wright County | 6 | 5 | 2.50" | Sep 22, 2025 |
| Audubon County | 4 | 3 | 1.25" | Mar 14, 2025 |
| Davis County | 4 | 2 | 1.75" | Jun 13, 2024 |
| Allamakee County | 1 | 1 | 1.00" | Apr 17, 2026 |
Source: NOAA Storm Prediction Center storm reports (final Storm Data through Dec 28, 2025; preliminary reports through Oct 9, 2026). Hail 1 inch or larger and damaging wind (58 mph or more, or reported damage). Counts are reports, not damage claims; many storms go unreported. Dates are CST. About the data