Sioux Falls, SD Weather & Growing Conditions
Tonight
39°F
Rain Showers
Rain showers. Cloudy. Low around 39, with temperatures rising to around 42 overnight. North northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 39°F | Rain Showers | 15 to 20 mph NNW | 100% |
| Wednesday | 45°F | Rain Showers | 15 mph NW | 89% |
| Wednesday Night | 37°F | Rain Showers Likely then Cloudy | 10 to 15 mph NW | 59% |
| Thursday | 47°F | Partly Sunny | 10 to 15 mph N | 10% |
| Thursday Night | 31°F | Mostly Cloudy | 0 to 10 mph N | 0% |
| Friday | 46°F | Partly Sunny | 0 to 5 mph SE | 0% |
| Friday Night | 30°F | Mostly Cloudy | 0 mph | 1% |
| Saturday | 55°F | Mostly Sunny | 0 to 10 mph WSW | 2% |
| Saturday Night | 34°F | Mostly Clear | 5 mph WNW | 4% |
| Sunday | 57°F | Sunny | 5 to 10 mph WSW | 3% |
| Sunday Night | 37°F | Mostly Clear | 5 mph SSW | 1% |
| Monday | 60°F | Sunny | 5 to 10 mph W | 0% |
| Monday Night | 37°F | Mostly Clear | 5 mph NW | 0% |
| Tuesday | 57°F | Mostly Sunny | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sioux Falls, SD
Last spring frost
May 1
First fall frost
Oct 6
Growing season
157 days
Hardiness zone
5a
Explore more for Sioux Falls, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Sioux Falls, Sd (1.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.