Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East

A significant, long-duration winter storm will bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Widespread travel disruptions, prolonged power outages, and vast tree damage is likely. Frigid temperatures, gusty winds, and dangerous wind chills will expand from the north-central US to the Southern Plains, MS Valley, and Midwest. Read More >

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Overcast

-11°F

-24°C

Humidity 70%
Wind Speed SE 8 mph
Barometer 30.57 in
Dewpoint -18°F (-28°C)
Visibility 10.00 mi
Wind Chill-28°F (-33°C)
Last update 23 Jan 11:15 pm CST
Extended Forecast for

5 Miles SSW Tolstoy SD

Cold Weather Advisory January 23, 11:39pm until January 24, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 23, 11:39pm until January 24, 12:00pm

    NOW until 12:00pm Sat

    Cold Weather Advisory

  • Tonight

    Low: -13 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny and cold, with a high near 8. Wind chill values as low as -26. South wind 6 to 10 mph.

    High: 8 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -7. Wind chill values as low as -21. Southeast wind 6 to 9 mph becoming north northeast after midnight.

    Low: -7 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny and cold, with a high near -1. Wind chill values as low as -24. North northwest wind 10 to 13 mph.

    High: -1 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -13. North northwest wind 8 to 11 mph becoming southwest after midnight.

    Low: -13 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 24. Southwest wind 13 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 24 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 3. Northwest wind 13 to 15 mph, with gusts as high as 23 mph.

    Low: 3 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 15. Northwest wind 10 to 13 mph.

    High: 15 °F

    Mostly Sunny

Detailed Forecast

Tonight
Mostly cloudy, with a low around -13. Wind chill values as low as -25. South wind 5 to 7 mph.
Saturday
Partly sunny and cold, with a high near 8. Wind chill values as low as -26. South wind 6 to 10 mph.
Saturday Night
Mostly cloudy, with a low around -7. Wind chill values as low as -21. Southeast wind 6 to 9 mph becoming north northeast after midnight.
Sunday
Mostly cloudy, then gradually becoming sunny and cold, with a high near -1. Wind chill values as low as -24. North northwest wind 10 to 13 mph.
Sunday Night
Mostly clear, with a low around -13. North northwest wind 8 to 11 mph becoming southwest after midnight.
Monday
Sunny, with a high near 24. Southwest wind 13 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.
Monday Night
Partly cloudy, with a low around 3. Northwest wind 13 to 15 mph, with gusts as high as 23 mph.
Tuesday
Mostly sunny, with a high near 15. Northwest wind 10 to 13 mph.
Tuesday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 2. West northwest wind around 10 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 18.
Wednesday Night
Partly cloudy, with a low around -3.
Thursday
Partly sunny, with a high near 13.
Thursday Night
Mostly cloudy, with a low around -4.
Friday
Partly sunny, with a high near 17.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Tolstoy SD
 45.14°N 99.66°W (Elev. 1929 ft)
11:01 pm CST Jan 23, 2026
11pm CST Jan 23, 2026-6pm CST Jan 30, 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