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

26°F

-3°C

Humidity 100%
Wind Speed SE 10 mph
Barometer 30.19 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 7 Feb 2:55 am CST
Extended Forecast for

Fort Thompson SD

  • Overnight

    Overnight: Mostly cloudy, with a low around 27. Southeast wind 11 to 15 mph, with gusts as high as 24 mph.

    Low: 27 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 54. Southeast wind 8 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 28 mph.

    High: 54 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29. Northwest wind 6 to 8 mph.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 59. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 33. Southwest wind 3 to 6 mph.

    Low: 33 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 57. Southeast wind 5 to 10 mph becoming northwest in the afternoon.

    High: 57 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. Northwest wind 8 to 10 mph.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of snow before noon. Mostly cloudy, with a high near 45. Northwest wind 7 to 10 mph. Chance of precipitation is 20%.

    High: 45 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 26. North northwest wind around 6 mph becoming southeast after midnight.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 27. Southeast wind 11 to 15 mph, with gusts as high as 24 mph.
Saturday
Partly sunny, with a high near 54. Southeast wind 8 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 28 mph.
Saturday Night
Partly cloudy, with a low around 29. Northwest wind 6 to 8 mph.
Sunday
Mostly sunny, with a high near 59. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 33. Southwest wind 3 to 6 mph.
Monday
Mostly cloudy, with a high near 57. Southeast wind 5 to 10 mph becoming northwest in the afternoon.
Monday Night
Mostly cloudy, with a low around 30. Northwest wind 8 to 10 mph.
Tuesday
A slight chance of snow before noon. Mostly cloudy, with a high near 45. Northwest wind 7 to 10 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 26. North northwest wind around 6 mph becoming southeast after midnight.
Wednesday
A chance of rain, mainly after noon. Mostly cloudy, with a high near 46. Chance of precipitation is 30%.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Thursday
A slight chance of rain and snow. Mostly cloudy, with a high near 45. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 25.
Friday
Mostly sunny, with a high near 46.
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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:
2:36 am CST Feb 7, 2026
Forecast Valid:
3am 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