National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair with Haze

54°F

12°C

Humidity 64%
Wind Speed E 6 mph
Barometer 30.29 in
Dewpoint 42°F (6°C)
Visibility 4.00 mi
Wind Chill52°F (11°C)
Last update 4 Oct 9:55 pm CDT
Extended Forecast for

Fort Thompson SD

  • Tonight

    Tonight: Mostly clear, with a low around 51. East southeast wind 9 to 13 mph.

    Low: 51 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81. Breezy, with a southeast wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 81 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. South southeast wind 5 to 11 mph becoming west northwest after midnight. Winds could gust as high as 20 mph.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Northwest wind 5 to 8 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53. North northwest wind 3 to 5 mph.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 74. Light and variable wind becoming northeast 5 to 8 mph in the morning.

    High: 74 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. East southeast wind around 6 mph.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 71. East wind 5 to 8 mph.

    High: 71 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52. East wind 3 to 6 mph.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 51. East southeast wind 9 to 13 mph.
Monday
Sunny, with a high near 81. Breezy, with a southeast wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph.
Monday Night
Mostly clear, with a low around 55. South southeast wind 5 to 11 mph becoming west northwest after midnight. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 79. Northwest wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 53. North northwest wind 3 to 5 mph.
Wednesday
Sunny, with a high near 74. Light and variable wind becoming northeast 5 to 8 mph in the morning.
Wednesday Night
Mostly clear, with a low around 52. East southeast wind around 6 mph.
Thursday
Mostly sunny, with a high near 71. East wind 5 to 8 mph.
Thursday Night
Partly cloudy, with a low around 52. East wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 74.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 81. Breezy.
Saturday Night
Mostly clear, with a low around 59.
Sunday
A slight chance of showers. Mostly sunny, with a high near 68. Chance of precipitation is 20%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fort Thompson SD
 44.05°N 99.4°W (Elev. 1447 ft)
Last Update:
9:21 pm CDT Oct 4, 2026
Forecast Valid:
10pm CDT Oct 4, 2026-6pm CDT Oct 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation