Frost dates for Sioux Falls, South Dakota
In a typical year, Sioux Falls’s last spring frost lands around Apr 26 and the first fall frost around Oct 13, a growing season of about 170 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 5a.
Right now the typical frost season has arrived; planting waits for spring.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Apr 10 | Sep 28 |
| 50 percent | Apr 26 | Oct 13 |
| 90 percent | May 9 | Oct 28 |
A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.
Soil in Sioux Falls is typically around 47°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Sioux Falls
- Garlic (Music)
Timing comes from the same temperature engine the app uses, run against Sioux Falls’s normals for today.
Common questions
When is the last frost in Sioux Falls, South Dakota?
Sioux Falls’s last spring frost falls around April 26 in a typical year. One year in ten it is done by April 10, and one year in ten frost holds on until May 9. Frost-sensitive planting usually waits for the late side of that band.
When is the first fall frost in Sioux Falls?
The first fall frost arrives around October 13 in a typical year, as early as September 28 in an early year and as late as October 28 in a late one.
How long is the growing season in Sioux Falls?
About 170 days, counted between the typical last spring frost and the typical first fall frost.
What USDA zone is Sioux Falls in?
Sioux Falls is in USDA hardiness zone 5a under the 2023 USDA Plant Hardiness Zone Map.
Dates come from 30-year NOAA climate normals for the nearest reporting station. They describe odds, not a forecast.
Nearby cities
- Brookings, SD (around May 6 to Oct 1)
- Yankton, SD (around Apr 27 to Oct 11)
- Worthington, MN (around May 3 to Oct 4)
- Mitchell, SD (around May 2 to Oct 6)
- Sioux City, IA (around Apr 29 to Oct 7)
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