Sioux Falls, SD Weather & Growing Conditions
Tonight
62°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 62. North wind around 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Cloudy then Slight Chance Rain Showers | 5 mph N | 19% |
| Saturday | 68°F | Patchy Fog then Cloudy | 5 to 10 mph NNE | 14% |
| Saturday Night | 57°F | Mostly Cloudy | 10 mph NNE | 3% |
| Sunday | 65°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 22% |
| Sunday Night | 54°F | Rain Showers Likely | 10 mph ENE | 57% |
| Monday | 61°F | Rain Showers Likely | 10 mph ENE | 57% |
| Monday Night | 49°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 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
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 (3.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.