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

Winter Storm Bringing Widespread Hazardous Weather to the Eastern U.S.

A rapidly-intensifying winter storm continues to bring heavy snow, high winds, and blizzard conditions over the Upper Midwest and Great Lakes through today. An Arctic front will lead in a period of gusty to high winds and sharply colder temperatures over the entire eastern U.S. Heavy lake effect snow is then expected from Lakes Erie and Ontario through New Year's Day. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

22°F

-6°C

Humidity 60%
Wind Speed Calm
Barometer 30.43 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 29 Dec 4:35 pm CST
Extended Forecast for

Fort Thompson SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 24. West wind around 6 mph becoming south southwest.

    High: 24 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 14. South wind around 6 mph becoming west in the evening.

    Low: 14 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 40. West northwest wind 7 to 16 mph, with gusts as high as 25 mph.

    High: 40 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 21. West northwest wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 21 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 35. West wind 5 to 11 mph becoming north northeast in the afternoon.

    High: 35 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 13. Northeast wind 6 to 10 mph becoming east southeast after midnight.

    Low: 13 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 33. East southeast wind 6 to 8 mph.

    High: 33 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 17. North northeast wind around 6 mph.

    Low: 17 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 30. East wind around 6 mph.

    High: 30 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 24. West wind around 6 mph becoming south southwest.
Tonight
Partly cloudy, with a low around 14. South wind around 6 mph becoming west in the evening.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 40. West northwest wind 7 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 21. West northwest wind 5 to 11 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 35. West wind 5 to 11 mph becoming north northeast in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 13. Northeast wind 6 to 10 mph becoming east southeast after midnight.
New Year's Day
Partly sunny, with a high near 33. East southeast wind 6 to 8 mph.
Thursday Night
Mostly cloudy, with a low around 17. North northeast wind around 6 mph.
Friday
Mostly cloudy, with a high near 30. East wind around 6 mph.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Mostly sunny, with a high near 42.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Sunny, with a high near 45.
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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:
4:36 pm CST Dec 29, 2025
Forecast Valid:
4pm CST Dec 29, 2025-6pm CST Jan 4, 2026
 
Forecast Discussion
 
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Additional Resources

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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