National Weather Service Forecast for: Harrisburg SD
Issued by: National Weather Service Sioux Falls, SD
Updated: 10:08 pm CST Feb 1, 2026
 
Overnight

Overnight: Mostly cloudy, with a low around 21. North northeast wind around 5 mph.
Mostly Cloudy

 Monday

Monday: Cloudy, with a high near 31. Northeast wind around 5 mph becoming east southeast in the afternoon.
Cloudy

 Monday
Night
Monday Night: A 50 percent chance of snow after 9pm. Cloudy, with a low around 16. East northeast wind around 5 mph. New snow accumulation of less than a half inch possible.
Chance Snow

 Tuesday

Tuesday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 28. East northeast wind around 5 mph becoming calm in the morning.
Slight Chance
Snow then
Mostly Cloudy
 Tuesday
Night
Tuesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 19. Calm wind becoming northwest around 5 mph after midnight.
Mostly Cloudy
then Slight
Chance Snow
 Wednesday

Wednesday: Mostly cloudy, with a high near 33. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Mostly Cloudy

 Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 22.
Mostly Cloudy

 Thursday

Thursday: Mostly sunny, with a high near 48.
Mostly Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 28.
Partly Cloudy
Lo 21 °F Hi 31 °F Lo 16 °F Hi 28 °F Lo 19 °F Hi 33 °F Lo 22 °F Hi 48 °F Lo 28 °F

 

Overnight
 
 Mostly cloudy, with a low around 21. North northeast wind around 5 mph.
Monday
 
 Cloudy, with a high near 31. Northeast wind around 5 mph becoming east southeast in the afternoon.
Monday Night
 
 A 50 percent chance of snow after 9pm. Cloudy, with a low around 16. East northeast wind around 5 mph. New snow accumulation of less than a half inch possible.
Tuesday
 
 A 20 percent chance of snow before noon. Mostly cloudy, with a high near 28. East northeast wind around 5 mph becoming calm in the morning.
Tuesday Night
 
 A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 19. Calm wind becoming northwest around 5 mph after midnight.
Wednesday
 
 Mostly cloudy, with a high near 33. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
 
 Mostly cloudy, with a low around 22.
Thursday
 
 Mostly sunny, with a high near 48.
Thursday Night
 
 Partly cloudy, with a low around 28.
Friday
 
 Mostly sunny, with a high near 37.
Friday Night
 
 Partly cloudy, with a low around 17.
Saturday
 
 Mostly sunny, with a high near 39.
Saturday Night
 
 Partly cloudy, with a low around 21.
Sunday
 
 Mostly sunny, with a high near 42.

 

Forecast from NOAA-NWS for Harrisburg SD.