Frost dates in Corson County, South Dakota
The average last spring frost in Corson County falls May 3 to May 20 and the average first fall frost Sep 23 to Oct 8, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4a to 4b. Places: Bullhead, Isabel, Kenel, Little Eagle, McIntosh, Morristown. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
| ZIP | Place | Last spring frost | First fall frost | Zone |
|---|---|---|---|---|
| 57621 | Bullhead | May 9 | Sep 30 | 4b |
| 57633 | Isabel | May 11 | Sep 30 | 4b |
| 57634 | May 10 | Sep 30 | 4b | |
| 57639 | Little Eagle | May 12 | Sep 28 | 4a |
| 57641 | McIntosh | May 9 | Sep 30 | 4b |
| 57642 | Kenel | May 12 | Sep 28 | 4b |
| 57645 | Morristown | May 20 | Sep 23 | 4b |
| 57657 | May 10 | Sep 30 | 4b | |
| 57658 | Wakpala | May 3 | Oct 8 | 4b |
| 57659 | May 9 | Sep 30 | 4b | |
| 57660 | May 9 | Sep 30 | 4b |
Nearby counties
Dewey County Campbell County Walworth County Perkins County Ziebach County Potter County
All South Dakota counties · Download South Dakota frost dates (CSV)
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