Hail in Corson County, South Dakota
Radar recorded hail of 1 inch or larger in Corson County on 68 days since October 2020. That is more than 93% of US counties. It ranks 16 of 66 in South Dakota.
The largest radar estimate was 4 inches on September 12, 2025. The most recent 1-inch day was September 27, 2026. Radar estimates and ground reports often differ, so see how they compare.
See the county center on the map
Days of 1-inch hail by year
| Year | Days |
|---|---|
| 2020 (from October) | 0 |
| 2021 | 9 |
| 2022 | 6 |
| 2023 | 9 |
| 2024 | 13 |
| 2025 | 18 |
| 2026 | 13 |
Largest hail days
| Storm day | Radar estimate |
|---|---|
| September 12, 2025 | 4 in |
| May 19, 2024 | 3.35 in |
| July 30, 2023 | 3.2 in |
| July 5, 2022 | 3.15 in |
| September 5, 2026 | 2.95 in |
| July 8, 2021 | 2.75 in |
Ground reports
Within this area, storm spotters and weather offices logged 23 hail reports since October 2020, and 28 tornadoes started here since 1950.
Figures cover a circle with the same land area as the county, centered on it, so edges are approximate.
Most hail days in South Dakota
- Pennington County: 168 days
- Custer County: 160 days
- Oglala Lakota County: 130 days
- Lawrence County: 124 days
- Meade County: 120 days
- Butte County: 115 days