Frost dates in Day County, South Dakota
The average last spring frost in Day County falls May 1 to May 6 and the average first fall frost Oct 4 to Oct 12, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4b. Places: Andover, Bristol, Grenville, Pierpont, Roslyn, Waubay. 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 |
|---|---|---|---|---|
| 57219 | Bristol | May 6 | Oct 4 | 4b |
| 57239 | Grenville | May 1 | Oct 12 | 4b |
| 57261 | Roslyn | May 2 | Oct 9 | 4b |
| 57273 | Waubay | May 1 | Oct 12 | 4b |
| 57274 | Webster | May 4 | Oct 6 | 4b |
| 57422 | Andover | May 6 | Oct 4 | 4b |
| 57468 | Pierpont | May 6 | Oct 4 | 4b |
Nearby counties
Marshall County Codington County Roberts County Clark County Brown County Grant County
All South Dakota counties · Download South Dakota frost dates (CSV)
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