Frost dates in Gregory County, South Dakota
The average last spring frost in Gregory County falls May 3 to May 6 and the average first fall frost Oct 3 to Oct 10, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a. Places: Bonesteel, Burke, Fairfax, Gregory, Herrick, St. Charles. 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 |
|---|---|---|---|---|
| 57317 | Bonesteel | May 3 | Oct 10 | 5a |
| 57335 | Fairfax | May 3 | Oct 10 | 5a |
| 57523 | Burke | May 6 | Oct 3 | 5a |
| 57533 | Gregory | May 6 | Oct 3 | 5a |
| 57538 | Herrick | May 3 | Oct 10 | 5a |
| 57571 | St. Charles | May 3 | Oct 10 | 5a |
Nearby counties
Charles Mix County Douglas County Tripp County Aurora County Brule County Davison County
All South Dakota counties · Download South Dakota frost dates (CSV)
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