Last frost date in Huron, South Dakota
May 6
Average last frost in spring. In an early year (1 in 10) it's over by April 23; in a late year (1 in 10) it comes after May 20.
October 2
Average first frost in fall. 1 year in 10 it comes by September 19.
Source: NOAA U.S. Climate Normals 1991–2020, station Huron Rgnl AP (USW00014936), 2.6 miles from Huron, elevation 1,280 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 23 | May 6 | May 20 |
| First frost in fall | Sept 19 | Oct 2 | Oct 14 |
Frost-free days in an average year: 146
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 16 | Sept 24 |
| Frost (32°F) | Every year | May 6 | Oct 2 |
| Hard freeze (28°F) | Every year | Apr 27 | Oct 8 |
Nights at 32°F or colder in an average year: 167
What to plant now in Huron
- Spring planting calendar for an average last frost around May 10 Huron: May 6
- Fall planting calendar for an average first frost around September 30 Huron: October 2
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
- Mitchell 45 mi · last frost May 2
- Watertown 64 mi · last frost May 7
- Brookings 70 mi · last frost May 6
- Aberdeen 77 mi · last frost May 8
- Sioux Falls 93 mi · last frost Apr 26
Updated