Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Fair

48°F

9°C

Humidity 62%
Wind Speed N 2 mph
Barometer 29.59 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 27 Dec 1:55 pm CST
Extended Forecast for

Lebanon SD

Wind Advisory December 27, 09:00pm until December 28, 06:00pm
Click here for hazard details and duration
Wind Advisory
  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 48. Light and variable wind becoming east southeast around 6 mph.

    High: 48 °F

    Mostly Sunny

  • Tonight

    Tonight: Snow likely, mainly between 1am and 4am.  Patchy blowing snow between 1am and 3am. Patchy fog between 8pm and 11pm.  Otherwise, increasing clouds, with a low around 5. Windy, with a west wind 8 to 13 mph becoming north northwest 23 to 33 mph. Winds could gust as high as 48 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 5 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Sunday

    Sunday: Partly sunny and cold, with a high near 10. Wind chill values as low as -20. Windy, with a northwest wind 32 to 34 mph, with gusts as high as 49 mph.

    High: 10 °F

    Cold and
    Windy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -1. Wind chill values as low as -21. Blustery, with a northwest wind 18 to 26 mph, with gusts as high as 40 mph.

    Low: -1 °F

    Mostly Cloudy
    and Blustery

  • Monday

    Monday: Sunny, with a high near 17. Northwest wind 9 to 17 mph becoming west southwest in the afternoon. Winds could gust as high as 26 mph.

    High: 17 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 10. Southwest wind 8 to 11 mph.

    Low: 10 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39. Breezy, with a west wind 13 to 20 mph, with gusts as high as 28 mph.

    High: 39 °F

    Partly Sunny
    then Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 18. Northwest wind 9 to 14 mph.

    Low: 18 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of snow.  Mostly cloudy, with a high near 28. North northwest wind 10 to 14 mph becoming east in the morning. Winds could gust as high as 22 mph.  Chance of precipitation is 20%.

    High: 28 °F

    Slight Chance
    Snow

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 48. Light and variable wind becoming east southeast around 6 mph.
Tonight
Snow likely, mainly between 1am and 4am. Patchy blowing snow between 1am and 3am. Patchy fog between 8pm and 11pm. Otherwise, increasing clouds, with a low around 5. Windy, with a west wind 8 to 13 mph becoming north northwest 23 to 33 mph. Winds could gust as high as 48 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday
Partly sunny and cold, with a high near 10. Wind chill values as low as -20. Windy, with a northwest wind 32 to 34 mph, with gusts as high as 49 mph.
Sunday Night
Mostly cloudy, with a low around -1. Wind chill values as low as -21. Blustery, with a northwest wind 18 to 26 mph, with gusts as high as 40 mph.
Monday
Sunny, with a high near 17. Northwest wind 9 to 17 mph becoming west southwest in the afternoon. Winds could gust as high as 26 mph.
Monday Night
Partly cloudy, with a low around 10. Southwest wind 8 to 11 mph.
Tuesday
Mostly sunny, with a high near 39. Breezy, with a west wind 13 to 20 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly cloudy, with a low around 18. Northwest wind 9 to 14 mph.
Wednesday
A slight chance of snow. Mostly cloudy, with a high near 28. North northwest wind 10 to 14 mph becoming east in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 6.
New Year's Day
Partly sunny, with a high near 20.
Thursday Night
Mostly cloudy, with a low around 8.
Friday
Partly sunny, with a high near 26.
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ABOUT THIS FORECAST

 
Point Forecast:
Lebanon SD
 45.07°N 99.78°W (Elev. 1955 ft)
1:26 pm CST Dec 27, 2025
2pm CST Dec 27, 2025-6pm CST Jan 2, 2026
 
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Additional Resources

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