South Dakota hail history

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South Dakota had hail reported on 536 days from 2016 to 2025, about 54 a year, and on 2,576 days since 1955. The largest hailstone on record in the state is 8.00″ (July 23, 2010). Pennington County had the most hail days of any county from 2016 to 2025 (149).

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.

South Dakota cities with the most hail days, 2016–2025

Biggest hail days in South Dakota since 2016

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

South Dakota 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 South Dakota, by month and week: South Dakota hail season

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

All South Dakota cities

Aberdeen Belle Fourche Box Elder Brandon Brookings Canton Dell Rapids Harrisburg Hartford Hot Springs Huron Lead Lennox Madison Milbank Mitchell Mobridge North Sioux City Pierre Rapid City Sioux Falls Spearfish Sturgis Summerset Tea Vermillion Watertown Winner Yankton

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