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

Late January Extreme Cold; Watching East Coast Storm Threat This Weekend

The next blast of Arctic air surges south down the Plains, across the Great Lakes and through the Southeast and East Friday through Saturday. This could be longest duration of cold in several decades. Forecast models are being closely monitored for potential of another significant winter storm to impact the eastern United States this coming weekend. Confidence in coastal impacts has increased. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Overcast

21°F

-6°C

Humidity 61%
Wind Speed E 9 mph
Barometer 30.25 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 28 Jan 6:55 pm CST
Extended Forecast for

Fort Thompson SD

  • Tonight

    Tonight: A chance of snow, mainly after 2am. Cloudy, with a low around 9. East wind 5 to 11 mph. Chance of precipitation is 50%.

    Low: 9 °F

    Mostly Cloudy
    then Chance
    Snow

  • Thursday

    Thursday: Snow likely, mainly before 9am. Mostly cloudy, with a high near 20. East wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 20 °F

    Snow Likely
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: A slight chance of snow before 1am, then a chance of snow after 2am. Mostly cloudy, with a low around -2. Northeast wind 6 to 8 mph. Chance of precipitation is 30%.

    Low: -2 °F

    Chance Snow

  • Friday

    Friday: Cloudy through mid morning, then gradual clearing and cold, with a high near 8. Northeast wind 7 to 9 mph.

    High: 8 °F

    Cold

  • Friday Night

    Friday Night: Mostly clear, with a low around -6. Northeast wind 5 to 8 mph becoming south southeast after midnight.

    Low: -6 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of snow after noon. Partly sunny, with a high near 26. South southeast wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 26 °F

    Mostly Sunny
    then Chance
    Snow

  • Saturday Night

    Saturday Night: A chance of snow, mainly before midnight. Mostly cloudy, with a low around 17. South wind 10 to 13 mph becoming west northwest after midnight. Chance of precipitation is 30%.

    Low: 17 °F

    Chance Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 37. Northwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 37 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 17. North northwest wind 5 to 8 mph becoming northeast after midnight.

    Low: 17 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of snow, mainly after 2am. Cloudy, with a low around 9. East wind 5 to 11 mph. Chance of precipitation is 50%.
Thursday
Snow likely, mainly before 9am. Mostly cloudy, with a high near 20. East wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
A slight chance of snow before 1am, then a chance of snow after 2am. Mostly cloudy, with a low around -2. Northeast wind 6 to 8 mph. Chance of precipitation is 30%.
Friday
Cloudy through mid morning, then gradual clearing and cold, with a high near 8. Northeast wind 7 to 9 mph.
Friday Night
Mostly clear, with a low around -6. Northeast wind 5 to 8 mph becoming south southeast after midnight.
Saturday
A chance of snow after noon. Partly sunny, with a high near 26. South southeast wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Saturday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 17. South wind 10 to 13 mph becoming west northwest after midnight. Chance of precipitation is 30%.
Sunday
Mostly cloudy, with a high near 37. Northwest wind 10 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Mostly cloudy, with a low around 17. North northwest wind 5 to 8 mph becoming northeast after midnight.
Monday
Mostly cloudy, with a high near 34.
Monday Night
Mostly cloudy, with a low around 19.
Tuesday
Mostly cloudy, with a high near 35.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 33.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fort Thompson SD
 44.05°N 99.4°W (Elev. 1447 ft)
Last Update:
6:36 pm CST Jan 28, 2026
Forecast Valid:
7pm CST Jan 28, 2026-6pm CST Feb 4, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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