Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

0°F

-18°C

Humidity 73%
Wind Speed N 10 mph
Barometer 30.45 in
Dewpoint -7°F (-22°C)
Visibility 10.00 mi
Wind Chill-16°F (-27°C)
Last update 19 Jan 3:15 am CST
Extended Forecast for

Fort Thompson SD

  • Overnight

    Overnight: Partly cloudy, with a low around -3. Wind chill values as low as -19. Northwest wind 13 to 15 mph.

    Low: -3 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Partly sunny, with a high near 18. Wind chill values as low as -20. West wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 18 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 1. North northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 1 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of snow after noon.  Mostly cloudy, with a high near 25. Light and variable wind becoming west northwest 5 to 10 mph in the morning.  Chance of precipitation is 50%.

    High: 25 °F

    Mostly Cloudy
    then Chance
    Snow

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 14. West wind around 10 mph.

    Low: 14 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of snow.  Partly sunny, with a high near 30. Blustery, with a northwest wind 10 to 15 mph increasing to 23 to 28 mph in the morning. Winds could gust as high as 37 mph.  Chance of precipitation is 20%.

    High: 30 °F

    Slight Chance
    Snow and
    Blustery

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 4. West wind 6 to 15 mph, with gusts as high as 24 mph.

    Low: 4 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 19. West wind 6 to 10 mph becoming north in the afternoon.

    High: 19 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -10. North wind 8 to 10 mph.

    Low: -10 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around -3. Wind chill values as low as -19. Northwest wind 13 to 15 mph.
M.L.King Day
Partly sunny, with a high near 18. Wind chill values as low as -20. West wind 8 to 11 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 1. North northwest wind 5 to 7 mph becoming calm in the evening.
Tuesday
A chance of snow after noon. Mostly cloudy, with a high near 25. Light and variable wind becoming west northwest 5 to 10 mph in the morning. Chance of precipitation is 50%.
Tuesday Night
Mostly cloudy, with a low around 14. West wind around 10 mph.
Wednesday
A slight chance of snow. Partly sunny, with a high near 30. Blustery, with a northwest wind 10 to 15 mph increasing to 23 to 28 mph in the morning. Winds could gust as high as 37 mph. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 4. West wind 6 to 15 mph, with gusts as high as 24 mph.
Thursday
Partly sunny, with a high near 19. West wind 6 to 10 mph becoming north in the afternoon.
Thursday Night
Mostly cloudy, with a low around -10. North wind 8 to 10 mph.
Friday
Mostly sunny and cold, with a high near 1.
Friday Night
Partly cloudy, with a low around -12.
Saturday
A slight chance of snow. Partly sunny, with a high near 13. Chance of precipitation is 20%.
Saturday Night
Mostly cloudy, with a low around -2.
Sunday
Mostly sunny, with a high near 23.
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Thompson SD
 44.05°N 99.4°W (Elev. 1447 ft)
3:16 am CST Jan 19, 2026
3am CST Jan 19, 2026-6pm CST Jan 25, 2026
 
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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