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

Arctic Air for the Northeast and Mid-Atlantic; Increase Moisture for Pacific Northwest; Active Pattern for Hawaii

An arctic cold front will impact the Great Lakes, Northeast and mid-Atlantic. Snow showers and squalls will accompany this system with increasing winds and falling temperatures. Damaging wind gusts may result in tree damage and power outages. Meanwhile, moisture returns for the Pacific Northwest and Hawaii this weekend with both coverage and intensity of rainfall and higher elevation snows. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

51°F

11°C

Humidity 48%
Wind Speed NW 12 mph
Barometer 29.89 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 7 Feb 4:35 pm CST
Extended Forecast for

Fort Thompson SD

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 54. West northwest wind around 9 mph.

    High: 54 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 29. Northwest wind 6 to 9 mph.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 57. West wind 3 to 6 mph.

    High: 57 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31. South wind around 6 mph.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 52. South southeast wind 5 to 13 mph becoming north northwest in the afternoon.

    High: 52 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28. Northwest wind 6 to 10 mph.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 45. Northwest wind 5 to 7 mph becoming east northeast in the afternoon.

    High: 45 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 27. Southeast wind 3 to 6 mph.

    Low: 27 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain and snow, mainly after noon. Cloudy, with a high near 44. Southeast wind 6 to 11 mph. Chance of precipitation is 30%.

    High: 44 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Partly sunny, with a high near 54. West northwest wind around 9 mph.
Tonight
Mostly cloudy, with a low around 29. Northwest wind 6 to 9 mph.
Sunday
Mostly sunny, with a high near 57. West wind 3 to 6 mph.
Sunday Night
Mostly cloudy, with a low around 31. South wind around 6 mph.
Monday
Mostly cloudy, with a high near 52. South southeast wind 5 to 13 mph becoming north northwest in the afternoon.
Monday Night
Mostly cloudy, with a low around 28. Northwest wind 6 to 10 mph.
Tuesday
Mostly cloudy, with a high near 45. Northwest wind 5 to 7 mph becoming east northeast in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 27. Southeast wind 3 to 6 mph.
Wednesday
A chance of rain and snow, mainly after noon. Cloudy, with a high near 44. Southeast wind 6 to 11 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of rain and snow before midnight, then a chance of snow. Cloudy, with a low around 26. Chance of precipitation is 40%.
Thursday
A slight chance of snow. Partly sunny, with a high near 43. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 23.
Friday
Mostly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fort Thompson SD
 44.05°N 99.4°W (Elev. 1447 ft)
Last Update:
4:36 pm CST Feb 7, 2026
Forecast Valid:
4pm CST Feb 7, 2026-6pm CST Feb 13, 2026
 
Forecast Discussion
 
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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