Frost dates · 2 cities · zones 5a–5b
South Dakota frost dates, city by city
Median last spring frost across 2 South Dakota cities runs from May 1 in Sioux Falls to May 3 in Rapid City.
| City | Zone | Last frost median | First frost median | Season | Jan → Dec |
|---|---|---|---|---|---|
| Sioux Falls | 5a | May 1 | Oct 6 | 157 d | |
| Rapid City | 5b | May 3 | Oct 8 | 157 d |
Medians from NOAA NCEI 1991–2020 U.S. Climate Normals at each city's nearest qualifying station; zones from the 2023 USDA Plant Hardiness Zone Map. Open a city for the 1-in-10-year dates, the station, and a planting calendar for every sauce crop.
All states →Build a plan from your ZIP →Earliest: Sioux Falls (May 1) · Latest: Rapid City (May 3)