Iowa hail history

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Iowa had hail reported on 382 days from 2016 to 2025, about 38 a year, and on 2,042 days since 1955. The largest hailstone on record in the state is 8.00″ (May 31, 1958). Polk County had the most hail days of any county from 2016 to 2025 (37).

Source: NOAA Storm Prediction Center storm reports. Data through November 6, 2026. Methodology

Report counts rose over the decades as more people and spotters reported storms, so compare recent years with each other rather than with the 1960s.

Iowa cities with the most hail days, 2016–2025

Biggest hail days in Iowa since 2016

The largest hail and the biggest storm days since 1955, with radar swaths since 2019: Biggest hail storms in Iowa history

Iowa counties

Places with fewer than 5 hail days on record are listed without a link and kept out of search engines.

When hail falls in Iowa, by month and week: Iowa hail season

Download every Iowa hail, tornado and wind report as CSV, by year: Iowa storm report downloads

All Iowa cities

Adel Albia Algona Altoona Ames Anamosa Ankeny Asbury Atlantic Bettendorf Bloomfield Bondurant Boone Burlington Camanche Carlisle Carroll Carter Lake Cedar Falls Cedar Rapids Center Point Centerville Chariton Charles City Cherokee Clarinda Clarion Clear Lake Clinton Clive Coralville Council Bluffs Cresco Creston Davenport Decorah Denison Des Moines DeWitt Dubuque Dyersville Eagle Grove Eldora Eldridge Emmetsburg Estherville Evansdale Fairfax Fairfield Forest City Fort Dodge Fort Madison Garner Glenwood Grimes Grinnell Grundy Center Hampton Harlan Hawarden Hiawatha Hudson Humboldt Huxley Independence Indianola Iowa City Iowa Falls Jefferson Jesup Johnston Kalona Keokuk Knoxville Le Claire Le Mars Madrid Manchester Maquoketa Marion Marshalltown Mason City Milford Missouri Valley Mitchellville Monticello Mount Pleasant Mount Vernon Muscatine Nevada New Hampton Newton North Liberty Norwalk Oelwein Onawa Orange City Osage Osceola Oskaloosa Ottumwa Pella Perry Pleasant Hill Polk City Red Oak Robins Rock Rapids Rock Valley Sergeant Bluff Sheldon Shenandoah Sibley Sioux Center Sioux City Solon Spencer Spirit Lake Storm Lake Story City Tama Tiffin Tipton Urbandale Vinton Washington Waterloo Waukee Waukon Waverly Webster City West Branch West Burlington West Des Moines West Liberty Williamsburg Wilton Windsor Heights Winterset

Guides: How to check if it hailed at your address · Hail size chart and roof damage