Frost dates in Grant County, South Dakota
The average last spring frost in Grant County falls May 2 to May 14 and the average first fall frost Sep 28 to Oct 4, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4a to 4b. Places: Big Stone City, La Bolt, Marvin, Milbank, Ortley, Revillo. 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 |
|---|---|---|---|---|
| 57216 | Big Stone City | May 2 | Oct 4 | 4b |
| 57246 | La Bolt | May 5 | Oct 2 | 4b |
| 57251 | Marvin | May 14 | Sep 28 | 4b |
| 57252 | Milbank | May 5 | Oct 2 | 4b |
| 57256 | Ortley | May 14 | Sep 28 | 4b |
| 57259 | Revillo | May 5 | Oct 2 | 4b |
| 57264 | Stockholm | May 5 | Oct 2 | 4b |
| 57265 | Strandburg | May 7 | Oct 1 | 4b |
| 57266 | Summit | May 14 | Sep 28 | 4a |
| 57269 | Twin Brooks | May 2 | Oct 4 | 4b |
Nearby counties
Codington County Roberts County Deuel County Hamlin County Day County Clark County
All South Dakota counties · Download South Dakota frost dates (CSV)
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