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.

Mostly Cloudy

44°F

7°C

Humidity 62%
Wind Speed N 13 G 20 mph
Barometer 30.39 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 5 Apr 9:15 pm CDT
Extended Forecast for

Fort Thompson SD

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. North northeast wind 6 to 11 mph.

    Low: 28 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of snow, mainly before 10am. Mostly cloudy, with a high near 40. Northeast wind 7 to 11 mph. Chance of precipitation is 30%.

    High: 40 °F

    Chance Snow

  • Monday Night

    Monday Night: Cloudy, with a low around 22. East northeast wind 10 to 13 mph.

    Low: 22 °F

    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 44. Breezy, with a south southeast wind 14 to 23 mph, with gusts as high as 33 mph.

    High: 44 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 34. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    Low: 34 °F

    Breezy.
    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58. Breezy, with a west northwest wind 13 to 22 mph, with gusts as high as 30 mph.

    High: 58 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. Blustery, with a west northwest wind 10 to 20 mph.

    Low: 29 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 52. Northwest wind 8 to 10 mph.

    High: 52 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of rain after 1am. Partly cloudy, with a low around 29. North wind 7 to 9 mph becoming east southeast after midnight. Chance of precipitation is 30%.

    Low: 29 °F

    Partly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 28. North northeast wind 6 to 11 mph.
Monday
A chance of snow, mainly before 10am. Mostly cloudy, with a high near 40. Northeast wind 7 to 11 mph. Chance of precipitation is 30%.
Monday Night
Cloudy, with a low around 22. East northeast wind 10 to 13 mph.
Tuesday
Mostly cloudy, with a high near 44. Breezy, with a south southeast wind 14 to 23 mph, with gusts as high as 33 mph.
Tuesday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 34. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 58. Breezy, with a west northwest wind 13 to 22 mph, with gusts as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 29. Blustery, with a west northwest wind 10 to 20 mph.
Thursday
Mostly sunny, with a high near 52. Northwest wind 8 to 10 mph.
Thursday Night
A chance of rain after 1am. Partly cloudy, with a low around 29. North wind 7 to 9 mph becoming east southeast after midnight. Chance of precipitation is 30%.
Friday
A chance of rain. Mostly sunny, with a high near 58. Chance of precipitation is 30%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 30%.
Saturday
A chance of rain. Partly sunny, with a high near 66. Chance of precipitation is 30%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Sunday
A chance of rain. Partly sunny, with a high near 72. Chance of precipitation is 50%.
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:
8:51 pm CDT Apr 5, 2026
Forecast Valid:
9pm CDT Apr 5, 2026-6pm CDT Apr 12, 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