National Weather Service Forecast for: Flandreau SD
Issued by: National Weather Service Sioux Falls, SD
Updated: 10:18 pm CST Dec 17, 2025
 
Tonight

Tonight: Rain likely, mainly before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 23. Breezy, with a west wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
and Breezy

 Thursday

Thursday: A chance of flurries before 8am, then a chance of snow between 8am and 4pm. Cloudy, with a temperature falling to around 8 by 3pm. Windy, with a northwest wind 25 to 30 mph increasing to 30 to 35 mph in the morning. Winds could gust as high as 55 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Chance Snow
and Windy

 Thursday
Night
Thursday Night: Mostly clear, with a low around 2. Blustery, with a northwest wind 15 to 25 mph becoming west northwest 5 to 10 mph after midnight. Winds could gust as high as 40 mph.
Mostly Clear
and Blustery
then Partly
Cloudy
 Friday

Friday: Partly sunny, with a high near 29. Breezy, with a south southeast wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Partly Sunny
and Breezy

 Friday
Night
Friday Night: Mostly cloudy, with a steady temperature around 27. South wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph.
Mostly Cloudy

 Saturday

Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 31. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Decreasing
Clouds

 Saturday
Night
Saturday Night: Mostly clear, with a low around 10.
Mostly Clear

 Sunday

Sunday: Mostly sunny, with a high near 32.
Mostly Sunny

 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 24.
Mostly Cloudy
Lo 23 °F Hi 26 °F⇓ Lo 2 °F Hi 29 °F Lo 27 °F Hi 31 °F Lo 10 °F Hi 32 °F Lo 24 °F

Hazardous Weather Outlook
High Wind Warning
 

Tonight
 
 Rain likely, mainly before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 23. Breezy, with a west wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
 
 A chance of flurries before 8am, then a chance of snow between 8am and 4pm. Cloudy, with a temperature falling to around 8 by 3pm. Windy, with a northwest wind 25 to 30 mph increasing to 30 to 35 mph in the morning. Winds could gust as high as 55 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday Night
 
 Mostly clear, with a low around 2. Blustery, with a northwest wind 15 to 25 mph becoming west northwest 5 to 10 mph after midnight. Winds could gust as high as 40 mph.
Friday
 
 Partly sunny, with a high near 29. Breezy, with a south southeast wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
 
 Mostly cloudy, with a steady temperature around 27. South wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph.
Saturday
 
 Mostly cloudy, then gradually becoming sunny, with a high near 31. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
 
 Mostly clear, with a low around 10.
Sunday
 
 Mostly sunny, with a high near 32.
Sunday Night
 
 Mostly cloudy, with a low around 24.
Monday
 
 Partly sunny, with a high near 42.
Monday Night
 
 Partly cloudy, with a low around 24.
Tuesday
 
 Mostly sunny, with a high near 36.
Tuesday Night
 
 Mostly cloudy, with a low around 21.
Wednesday
 
 Partly sunny, with a high near 37.

 

Forecast from NOAA-NWS for Flandreau SD.