Sioux Falls, SD Weather & Growing Conditions
Tonight
63°F
Cloudy then Slight Chance Rain Showers
A slight chance of rain showers between 1am and 2am, then patchy fog and a slight chance of rain showers. Cloudy, with a low around 63. North northeast wind around 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Cloudy then Slight Chance Rain Showers | 5 mph NNE | 19% |
| Saturday | 69°F | Patchy Fog then Cloudy | 5 to 10 mph NNE | 14% |
| Saturday Night | 57°F | Mostly Cloudy | 10 mph NNE | 3% |
| Sunday | 66°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 22% |
| Sunday Night | 54°F | Rain Showers Likely | 10 mph ENE | 58% |
| Monday | 61°F | Rain Showers Likely | 10 mph ENE | 58% |
| Monday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph ENE | 18% |
| Tuesday | 64°F | Partly Sunny | 5 to 10 mph E | 4% |
| Tuesday Night | 49°F | Partly Cloudy | 5 to 10 mph SE | 1% |
| Wednesday | 68°F | Partly Sunny | 5 to 10 mph SSE | 10% |
| Wednesday Night | 54°F | Chance Rain Showers | 5 to 10 mph SSE | 39% |
| Thursday | 69°F | Chance Rain Showers | 5 to 10 mph SSE | 39% |
| Thursday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph SE | 16% |
| Friday | 71°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph SE | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sioux Falls, SD
Last spring frost
Apr 26
First fall frost
Oct 13
Growing season
169 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 Wfo Ap, Sd (4.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.