Frost dates in South Dakota
Average last frost dates in South Dakota run from April 26 in Sioux Falls to May 12 in Box Elder.
| Place | Last frost | First frost |
|---|---|---|
| Aberdeen | May 8 | Sept 29 |
| Box Elder | May 12 | Oct 1 |
| Brandon | May 1 | Oct 6 |
| Brookings | May 6 | Oct 1 |
| Harrisburg | May 2 | Oct 2 |
| Huron | May 6 | Oct 2 |
| Mitchell | May 2 | Oct 6 |
| Pierre | May 6 | Oct 3 |
| Rapid City | May 3 | Oct 8 |
| Sioux Falls | Apr 26 | Oct 13 |
| Spearfish | May 12 | Oct 2 |
| Vermillion | May 3 | Oct 3 |
| Watertown | May 7 | Sept 30 |
| Yankton | Apr 27 | Oct 11 |
Source: NOAA U.S. Climate Normals 1991–2020, nearest station to each place. Places of 10,000+ people (US Census Bureau, 2024 estimates) within 50 miles of a station.
When to plant in South Dakota
- Asparagus
- Lima Beans
- Green Beans
- Beets
- Broccoli
- Brussels Sprouts
- Cabbage
- Chinese Cabbage
- Carrots
- Cauliflower
- Celery
- Swiss Chard
- Collard Greens
- Sweet Corn
- Cucumbers
- Eggplant
- Garlic
- Kale
- Leeks
- Lettuce
- Cantaloupe
- Okra
- Onions
- Onion Sets
- Peas
- Black-Eyed Peas
- Peppers
- Potatoes
- Radishes
- Rhubarb
- Spinach
- Summer Squash (Zucchini)
- Winter Squash
- Sweet Potatoes
- Tomatoes
- Turnips
- Watermelon