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

24°F

-4°C

Humidity 86%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 7 Mar 8:35 am CST
Extended Forecast for

Fort Thompson SD

  • Today

    Today: Sunny, with a high near 56. West southwest wind 5 to 15 mph, with gusts as high as 23 mph.

    High: 56 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 35. West wind around 11 mph.

    Low: 35 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 70. Breezy, with a west southwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 70 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35. West southwest wind 6 to 10 mph becoming north after midnight.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 56. Northeast wind 7 to 13 mph.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of rain and snow between midnight and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a low around 28. East northeast wind 11 to 16 mph. Chance of precipitation is 20%.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Tuesday

    Tuesday: A slight chance of snow before noon, then a slight chance of rain and snow. Mostly cloudy, with a high near 47. Northeast wind 11 to 13 mph. Chance of precipitation is 20%.

    High: 47 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 24. North wind 9 to 15 mph. Chance of precipitation is 20%.

    Low: 24 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 47. Northwest wind 10 to 18 mph, with gusts as high as 26 mph.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 56. West southwest wind 5 to 15 mph, with gusts as high as 23 mph.
Tonight
Partly cloudy, with a low around 35. West wind around 11 mph.
Sunday
Sunny, with a high near 70. Breezy, with a west southwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
Mostly clear, with a low around 35. West southwest wind 6 to 10 mph becoming north after midnight.
Monday
Mostly sunny, with a high near 56. Northeast wind 7 to 13 mph.
Monday Night
A slight chance of rain and snow between midnight and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a low around 28. East northeast wind 11 to 16 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of snow before noon, then a slight chance of rain and snow. Mostly cloudy, with a high near 47. Northeast wind 11 to 13 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 24. North wind 9 to 15 mph. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 47. Northwest wind 10 to 18 mph, with gusts as high as 26 mph.
Wednesday Night
Partly cloudy, with a low around 25.
Thursday
Mostly cloudy, with a high near 62. Breezy.
Thursday Night
Cloudy, with a low around 30.
Friday
Mostly cloudy, with a high near 47. Breezy.
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:
8:36 am CST Mar 7, 2026
Forecast Valid:
8am CST Mar 7, 2026-6pm CDT Mar 13, 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