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

Hazardous Weather Conditions

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

49°F

9°C

Humidity 56%
Wind Speed W 7 mph
Barometer 30.00 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 20 Mar 9:15 am CDT
Extended Forecast for

Fort Thompson SD

  • Today

    Today: Sunny, with a high near 77. West northwest wind 6 to 11 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 42. West northwest wind around 6 mph becoming southeast after midnight.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84. Light and variable wind becoming south 5 to 8 mph in the morning.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37. North northeast wind 8 to 18 mph, with gusts as high as 29 mph.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 53. North wind 13 to 15 mph.

    High: 53 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30. North wind 6 to 10 mph becoming southeast after midnight.

    Low: 30 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 62. South southeast wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon.

    High: 62 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. Southeast wind 9 to 11 mph.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 59. East northeast wind 10 to 13 mph.

    High: 59 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 77. West northwest wind 6 to 11 mph.
Tonight
Mostly clear, with a low around 42. West northwest wind around 6 mph becoming southeast after midnight.
Saturday
Sunny, with a high near 84. Light and variable wind becoming south 5 to 8 mph in the morning.
Saturday Night
Partly cloudy, with a low around 37. North northeast wind 8 to 18 mph, with gusts as high as 29 mph.
Sunday
Partly sunny, with a high near 53. North wind 13 to 15 mph.
Sunday Night
Partly cloudy, with a low around 30. North wind 6 to 10 mph becoming southeast after midnight.
Monday
Partly sunny, with a high near 62. South southeast wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 35. Southeast wind 9 to 11 mph.
Tuesday
Partly sunny, with a high near 59. East northeast wind 10 to 13 mph.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 55. Breezy.
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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:
9:21 am CDT Mar 20, 2026
Forecast Valid:
9am CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation