National Weather Service Forecast for: Sioux Falls SD
Issued by: National Weather Service Sioux Falls, SD
Updated: 3:03 pm CDT Jul 28, 2026
 
This
Afternoon
This Afternoon: Patchy smoke. Mostly sunny, with a high near 91. South southeast wind around 5 mph.
Patchy Smoke

 Tonight

Tonight: Patchy smoke. Mostly clear, with a low around 70. Southeast wind around 5 mph.
Patchy Smoke

 Wednesday

Wednesday: Patchy smoke. Sunny, with a high near 91. South wind 5 to 10 mph.
Patchy Smoke

 Wednesday
Night
Wednesday Night: A 20 percent chance of showers and thunderstorms after 1am. Patchy smoke. Partly cloudy, with a low around 71. South southeast wind around 10 mph.
Patchy Smoke
then Slight
Chance
T-storms
 Thursday

Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Patchy smoke before 8am. Mostly cloudy, with a high near 84. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Showers
Likely

 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 67. South southeast wind 5 to 10 mph becoming west northwest after midnight. Chance of precipitation is 90%.
Showers

 Friday

Friday: Partly sunny, with a high near 81.
Partly Sunny

 Friday
Night
Friday Night: Mostly clear, with a low around 63.
Mostly Clear

 Saturday

Saturday: Sunny, with a high near 82.
Sunny
Hi 91 °F Lo 70 °F Hi 91 °F Lo 71 °F Hi 84 °F Lo 67 °F Hi 81 °F Lo 63 °F Hi 82 °F

Hazardous Weather Outlook
 

This Afternoon
 
 Patchy smoke. Mostly sunny, with a high near 91. South southeast wind around 5 mph.
Tonight
 
 Patchy smoke. Mostly clear, with a low around 70. Southeast wind around 5 mph.
Wednesday
 
 Patchy smoke. Sunny, with a high near 91. South wind 5 to 10 mph.
Wednesday Night
 
 A 20 percent chance of showers and thunderstorms after 1am. Patchy smoke. Partly cloudy, with a low around 71. South southeast wind around 10 mph.
Thursday
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Patchy smoke before 8am. Mostly cloudy, with a high near 84. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Thursday Night
 
 Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 67. South southeast wind 5 to 10 mph becoming west northwest after midnight. Chance of precipitation is 90%.
Friday
 
 Partly sunny, with a high near 81.
Friday Night
 
 Mostly clear, with a low around 63.
Saturday
 
 Sunny, with a high near 82.
Saturday Night
 
 Clear, with a low around 63.
Sunday
 
 Sunny, with a high near 83.
Sunday Night
 
 Mostly clear, with a low around 66.
Monday
 
 Sunny, with a high near 85.

 

Forecast from NOAA-NWS for Sioux Falls SD.