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

Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Hazardous Weather Conditions

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Overcast

18°F

-8°C

Humidity 86%
Wind Speed SE 9 mph
Barometer 29.96 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 10 Dec 9:15 pm CST
Extended Forecast for

Lebanon SD

Winter Weather Advisory December 11, 12:00am until December 11, 06:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: A chance of snow before 3am, then a chance of snow and freezing rain between 3am and 4am, then a chance of freezing rain after 4am. Cloudy, with a low around 14. Southeast wind 10 to 13 mph. Chance of precipitation is 50%.

    Low: 14 °F

    Chance Snow
    then Chance
    Wintry Mix

  • Thursday

    Thursday: Freezing rain, mainly before 2pm. High near 30. South southeast wind around 11 mph becoming north northwest in the afternoon. Chance of precipitation is 90%. New ice accumulation of around a 0.2 of an inch possible.

    High: 30 °F

    Freezing Rain
    then Chance
    Freezing Rain

  • Thursday Night

    Thursday Night: A slight chance of snow and freezing rain before 9pm, then a chance of snow between 9pm and 4am. Cloudy, with a low around 4. Blustery, with a north northwest wind 11 to 16 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 30%.

    Low: 4 °F

    Chance Wintry
    Mix then
    Slight Chance
    Snow and
    Blustery

  • Friday

    Friday: A slight chance of snow after noon. Mostly cloudy, with a high near 12. Blustery, with a north northwest wind 13 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    High: 12 °F

    Mostly Cloudy
    and Blustery
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: Snow likely, mainly after midnight. Cloudy, with a low around -2. North northwest wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: -2 °F

    Chance Snow
    then Snow
    Likely

  • Saturday

    Saturday: A chance of snow before noon. Partly sunny and cold, with a high near 3. North wind 8 to 11 mph. Chance of precipitation is 50%.

    High: 3 °F

    Chance Snow
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -13. North wind 7 to 11 mph becoming southeast in the evening.

    Low: -13 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 22. Southeast wind 13 to 18 mph, with gusts as high as 29 mph.

    High: 22 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 12. South southeast wind 10 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph.

    Low: 12 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of snow before 3am, then a chance of snow and freezing rain between 3am and 4am, then a chance of freezing rain after 4am. Cloudy, with a low around 14. Southeast wind 10 to 13 mph. Chance of precipitation is 50%.
Thursday
Freezing rain, mainly before 2pm. High near 30. South southeast wind around 11 mph becoming north northwest in the afternoon. Chance of precipitation is 90%. New ice accumulation of around a 0.2 of an inch possible.
Thursday Night
A slight chance of snow and freezing rain before 9pm, then a chance of snow between 9pm and 4am. Cloudy, with a low around 4. Blustery, with a north northwest wind 11 to 16 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 30%.
Friday
A slight chance of snow after noon. Mostly cloudy, with a high near 12. Blustery, with a north northwest wind 13 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Friday Night
Snow likely, mainly after midnight. Cloudy, with a low around -2. North northwest wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Saturday
A chance of snow before noon. Partly sunny and cold, with a high near 3. North wind 8 to 11 mph. Chance of precipitation is 50%.
Saturday Night
Partly cloudy, with a low around -13. North wind 7 to 11 mph becoming southeast in the evening.
Sunday
Mostly sunny, with a high near 22. Southeast wind 13 to 18 mph, with gusts as high as 29 mph.
Sunday Night
Partly cloudy, with a low around 12. South southeast wind 10 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph.
Monday
Mostly sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Mostly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 23.
Wednesday
A slight chance of rain. Partly sunny, with a high near 37. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lebanon SD
 45.07°N 99.78°W (Elev. 1955 ft)
Last Update:
4:56 pm CST Dec 10, 2025
Forecast Valid:
9pm CST Dec 10, 2025-6pm CST Dec 17, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation