National Weather Service Forecast for: Chamberlain SD
Issued by: National Weather Service Sioux Falls, SD
Updated: 2:39 am CDT Aug 20, 2026
 
Overnight

Overnight: Mostly clear, with a steady temperature around 65. South wind around 5 mph.
Mostly Clear


 Thursday

Thursday: Patchy smoke after 5pm. Sunny, with a high near 90. South wind 5 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.
Sunny then
Patchy Smoke

 Thursday
Night
Thursday Night: Patchy smoke before 9pm. Mostly clear, with a low around 62. North wind around 5 mph becoming calm in the evening.
Patchy Smoke
then Mostly
Clear

 Friday

Friday: Sunny, with a high near 87. East wind 5 to 10 mph.
Sunny


 Friday
Night
Friday Night: Mostly clear, with a low around 61. East wind 5 to 10 mph.
Mostly Clear


 Saturday

Saturday: Sunny, with a high near 83. East northeast wind 5 to 10 mph.
Sunny


 Saturday
Night
Saturday Night: Mostly cloudy, with a low around 61.
Mostly Cloudy


 Sunday

Sunday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 82. Breezy. Chance of precipitation is 40%.
Chance
Showers then
Chance
T-storms and
Breezy
 Sunday
Night
Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Breezy.
Chance
T-storms and
Breezy
Lo 65 °F Hi 90 °F Lo 62 °F Hi 87 °F Lo 61 °F Hi 83 °F Lo 61 °F Hi 82 °F Lo 64 °F

 

Overnight
 
 Mostly clear, with a steady temperature around 65. South wind around 5 mph.
Thursday
 
 Patchy smoke after 5pm. Sunny, with a high near 90. South wind 5 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
 
 Patchy smoke before 9pm. Mostly clear, with a low around 62. North wind around 5 mph becoming calm in the evening.
Friday
 
 Sunny, with a high near 87. East wind 5 to 10 mph.
Friday Night
 
 Mostly clear, with a low around 61. East wind 5 to 10 mph.
Saturday
 
 Sunny, with a high near 83. East northeast wind 5 to 10 mph.
Saturday Night
 
 Mostly cloudy, with a low around 61.
Sunday
 
 A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 82. Breezy. Chance of precipitation is 40%.
Sunday Night
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Breezy.
Monday
 
 Mostly sunny, with a high near 87.
Monday Night
 
 Partly cloudy, with a low around 65.
Tuesday
 
 Mostly sunny, with a high near 86.
Tuesday Night
 
 Partly cloudy, with a low around 62.
Wednesday
 
 Mostly sunny, with a high near 84.

 

Forecast from NOAA-NWS for Chamberlain SD.