Heavy Mountain Snow in the Northwest U.S.; Wintry Mix North-Central to Northeast U.S.

Two cold fronts will pass through the Northwest U.S. this week with the main impact being heavy mountain snow across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain to the Upper Midwest and Great Lakes overnight into Tuesday then the Northeast U.S. Tuesday night into Wednesday. Read More >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

30°F

-1°C

Humidity 100%
Wind Speed S 8 mph
Barometer 29.64 in (1005.7 mb)
Dewpoint 30°F (-1°C)
Visibility NA
Wind Chill22°F (-6°C)
Last update 5 Jan 8:56 pm CST
Extended Forecast for

New Effington SD

Dense Fog Advisory January 5, 09:54pm until January 6, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory January 5, 09:54pm until January 6, 12:00pm

    NOW until 12:00pm Tue

    Dense Fog Advisory

  • Tonight

    Low: 21 °F

    Dense
    Freezing Fog

  • Tuesday

    Tuesday: Patchy dense fog between 10am and 11am. Areas of dense freezing fog before 10am.  Otherwise, partly sunny, with a high near 31. Northwest wind 5 to 9 mph becoming southwest in the afternoon.

    High: 31 °F

    Areas Dense
    Freezing Fog
    and Patchy
    Dense Fog

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a steady temperature around 26. Southwest wind 6 to 10 mph.

    Low: 26 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38. Southwest wind 7 to 10 mph.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24. South southwest wind around 7 mph becoming west northwest after midnight.

    Low: 24 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 34. North wind 6 to 8 mph.

    High: 34 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 18. North northwest wind around 6 mph.

    Low: 18 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 30. Northwest wind 6 to 11 mph.

    High: 30 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Widespread dense freezing fog before 3am, then areas of dense freezing fog after 4am. Mostly cloudy, with a low around 21. South southeast wind 7 to 10 mph becoming northwest in the evening.
Tuesday
Patchy dense fog between 10am and 11am. Areas of dense freezing fog before 10am. Otherwise, partly sunny, with a high near 31. Northwest wind 5 to 9 mph becoming southwest in the afternoon.
Tuesday Night
Partly cloudy, with a steady temperature around 26. Southwest wind 6 to 10 mph.
Wednesday
Mostly sunny, with a high near 38. Southwest wind 7 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 24. South southwest wind around 7 mph becoming west northwest after midnight.
Thursday
Mostly cloudy, with a high near 34. North wind 6 to 8 mph.
Thursday Night
Mostly cloudy, with a low around 18. North northwest wind around 6 mph.
Friday
Mostly cloudy, with a high near 30. Northwest wind 6 to 11 mph.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 12. Northwest wind 11 to 16 mph. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 18. Blustery.
Saturday Night
Mostly cloudy, with a low around 6.
Sunday
Mostly sunny, with a high near 32.
Sunday Night
Mostly cloudy, with a low around 21.
Monday
Mostly sunny, with a high near 36.
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ABOUT THIS FORECAST

 
Point Forecast:
New Effington SD
 45.85°N 96.92°W (Elev. 1099 ft)
9:37 pm CST Jan 5, 2026
9pm CST Jan 5, 2026-6pm CST Jan 12, 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