Last frost date in Sioux Falls, South Dakota
April 26
Average last frost in spring. In an early year (1 in 10) it's over by April 10; in a late year (1 in 10) it comes after May 9.
October 13
Average first frost in fall. 1 year in 10 it comes by September 28.
Source: NOAA U.S. Climate Normals 1991–2020, station Sioux Falls WFO AP (USC00397666), 3.3 miles from Sioux Falls, elevation 1,430 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 10 | Apr 26 | May 9 |
| First frost in fall | Sept 28 | Oct 13 | Oct 28 |
Frost-free days in an average year: 169
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 6 | Oct 2 |
| Frost (32°F) | Every year | Apr 26 | Oct 13 |
| Hard freeze (28°F) | Every year | Apr 15 | Oct 24 |
Nights at 32°F or colder in an average year: 154
What to plant now in Sioux Falls
- Spring planting calendar for an average last frost around April 30 Sioux Falls: April 26
- Fall planting calendar for an average first frost around October 10 Sioux Falls: October 13
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.
Nearby in South Dakota
- Harrisburg 7 mi · last frost May 2
- Brandon 8 mi · last frost May 1
- Brookings 53 mi · last frost May 6
- Vermillion 53 mi · last frost May 3
- Yankton 56 mi · last frost Apr 27
Updated