National Weather Service Forecast for: Chamberlain SD
Issued by: National Weather Service Sioux Falls, SD
Updated: 12:00 pm CDT Jul 26, 2025
 
This
Afternoon
This Afternoon: Mostly sunny and hot, with a high near 101. Heat index values as high as 105. South southeast wind around 15 mph, with gusts as high as 25 mph.
Hot

 Tonight

Tonight: A slight chance of showers and thunderstorms between midnight and 1am. Partly cloudy, with a low around 72. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Partly Cloudy
then Slight
Chance
T-storms
 Sunday

Sunday: Sunny and hot, with a high near 103. Southeast wind 10 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 25 mph.
Hot

 Sunday
Night
Sunday Night: Mostly clear, with a low around 70. West wind 5 to 15 mph becoming northeast after midnight. Winds could gust as high as 20 mph.
Mostly Clear

 Monday

Monday: Sunny and hot, with a high near 101. East wind 5 to 15 mph, with gusts as high as 25 mph.
Hot

 Monday
Night
Monday Night: Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
T-storms
Likely then
Showers
Likely
 Tuesday

Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 87. Chance of precipitation is 30%.
Chance
Showers then
Chance
T-storms
 Tuesday
Night
Tuesday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
T-storms
Likely

 Wednesday

Wednesday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 80.
Chance
T-storms
Hi 101 °F Lo 72 °F Hi 103 °F Lo 70 °F Hi 101 °F Lo 68 °F Hi 87 °F Lo 65 °F Hi 80 °F

Hazardous Weather Outlook
Heat Advisory
Extreme Heat Watch
 

This Afternoon
 
 Mostly sunny and hot, with a high near 101. Heat index values as high as 105. South southeast wind around 15 mph, with gusts as high as 25 mph.
Tonight
 
 A slight chance of showers and thunderstorms between midnight and 1am. Partly cloudy, with a low around 72. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Sunday
 
 Sunny and hot, with a high near 103. Southeast wind 10 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
 
 Mostly clear, with a low around 70. West wind 5 to 15 mph becoming northeast after midnight. Winds could gust as high as 20 mph.
Monday
 
 Sunny and hot, with a high near 101. East wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
 
 Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Tuesday
 
 A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 87. Chance of precipitation is 30%.
Tuesday Night
 
 Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Wednesday
 
 A 30 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 80.
Wednesday Night
 
 Mostly cloudy, with a low around 61.
Thursday
 
 Mostly cloudy, with a high near 79.
Thursday Night
 
 Mostly cloudy, with a low around 59.
Friday
 
 Mostly cloudy, with a high near 78.

 

Forecast from NOAA-NWS for Chamberlain SD.