National Weather Service Forecast for: Sioux Falls SD
Issued by: National Weather Service Sioux Falls, SD
Updated: 4:38 pm CST Dec 22, 2025
 
Tonight

Tonight: Partly cloudy, with a low around 29. Southeast wind 5 to 10 mph becoming northwest after midnight.
Partly Cloudy
Tuesday

Tuesday: Mostly sunny, with a high near 39. North wind around 5 mph becoming east in the afternoon.
Mostly Sunny
Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 29. South southeast wind 5 to 10 mph.
Mostly Cloudy
Wednesday

Wednesday: Partly sunny, with a high near 45. South southeast wind 5 to 10 mph.
Partly Sunny
Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 32. East northeast wind around 5 mph.
Mostly Cloudy
Christmas
Day
Christmas Day: Cloudy, with a high near 48. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Cloudy
Thursday
Night
Thursday Night: Mostly cloudy, with a low around 32.
Mostly Cloudy
Friday

Friday: Mostly sunny, with a high near 42.
Mostly Sunny
Friday
Night
Friday Night: Partly cloudy, with a low around 33.
Partly Cloudy
Lo 29 °F Hi 39 °F Lo 29 °F Hi 45 °F Lo 32 °F Hi 48 °F Lo 32 °F Hi 42 °F Lo 33 °F

Hazardous Weather Outlook
 

Tonight
 
Partly cloudy, with a low around 29. Southeast wind 5 to 10 mph becoming northwest after midnight.
Tuesday
 
Mostly sunny, with a high near 39. North wind around 5 mph becoming east in the afternoon.
Tuesday Night
 
Mostly cloudy, with a low around 29. South southeast wind 5 to 10 mph.
Wednesday
 
Partly sunny, with a high near 45. South southeast wind 5 to 10 mph.
Wednesday Night
 
Mostly cloudy, with a low around 32. East northeast wind around 5 mph.
Christmas Day
 
Cloudy, with a high near 48. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
 
Mostly cloudy, with a low around 32.
Friday
 
Mostly sunny, with a high near 42.
Friday Night
 
Partly cloudy, with a low around 33.
Saturday
 
Mostly cloudy, with a high near 44.
Saturday Night
 
Partly cloudy, with a low around 13.
Sunday
 
Sunny, with a high near 25.
Sunday Night
 
Mostly clear, with a low around 15.
Monday
 
Sunny, with a high near 32.

 

Forecast from NOAA-NWS for Sioux Falls SD.