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.

Overcast

33°F

1°C

Humidity 80%
Wind Speed N 10 mph
Barometer 30.47 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 6 Apr 6:35 am CDT
Extended Forecast for

Fort Thompson SD

  • Today

    Today: A chance of snow, mainly before 1pm. Cloudy, with a high near 39. Northeast wind 7 to 11 mph. Chance of precipitation is 40%.

    High: 39 °F

    Chance Snow

  • Tonight

    Tonight: Cloudy, with a low around 22. East northeast wind around 11 mph.

    Low: 22 °F

    Cloudy

  • Tuesday

    Tuesday: A slight chance of snow before 1pm. Mostly cloudy, with a high near 43. Breezy, with a south southeast wind 14 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

    High: 43 °F

    Slight Chance
    Snow and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 29 mph.

    Low: 34 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 57. Breezy, with a west northwest wind 14 to 21 mph, with gusts as high as 29 mph.

    High: 57 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 27. West northwest wind 7 to 16 mph.

    Low: 27 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 52. Northwest wind 7 to 9 mph.

    High: 52 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of rain after 1am. Partly cloudy, with a low around 28. North wind 6 to 8 mph becoming east after midnight. Chance of precipitation is 20%.

    Low: 28 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Friday

    Friday: A chance of rain. Mostly sunny, with a high near 57. Southeast wind 6 to 14 mph. Chance of precipitation is 30%.

    High: 57 °F

    Chance Rain

Detailed Forecast

Today
A chance of snow, mainly before 1pm. Cloudy, with a high near 39. Northeast wind 7 to 11 mph. Chance of precipitation is 40%.
Tonight
Cloudy, with a low around 22. East northeast wind around 11 mph.
Tuesday
A slight chance of snow before 1pm. Mostly cloudy, with a high near 43. Breezy, with a south southeast wind 14 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 34. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 29 mph.
Wednesday
Mostly sunny, with a high near 57. Breezy, with a west northwest wind 14 to 21 mph, with gusts as high as 29 mph.
Wednesday Night
Mostly clear, with a low around 27. West northwest wind 7 to 16 mph.
Thursday
Mostly sunny, with a high near 52. Northwest wind 7 to 9 mph.
Thursday Night
A slight chance of rain after 1am. Partly cloudy, with a low around 28. North wind 6 to 8 mph becoming east after midnight. Chance of precipitation is 20%.
Friday
A chance of rain. Mostly sunny, with a high near 57. Southeast wind 6 to 14 mph. Chance of precipitation is 30%.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 20%.
Saturday
A chance of rain. Mostly cloudy, with a high near 68. Breezy. Chance of precipitation is 30%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.
Sunday
A chance of rain. Partly sunny, with a high near 75. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Thompson SD
 44.05°N 99.4°W (Elev. 1447 ft)
Last Update:
6:36 am CDT Apr 6, 2026
Forecast Valid:
6am CDT Apr 6, 2026-6pm CDT Apr 12, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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