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

Prolonged Extreme Cold; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the Gulf Coast, upper Ohio Valley, Mid-Atlantic, and Southeast U.S. into this weekend. A rapidly deepening storm centered just off the North Carolina coast Friday night through Saturday night will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia. Read More >

Hazardous Weather Conditions

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Overcast

5°F

-15°C

Humidity 92%
Wind Speed E 15 mph
Barometer 30.44 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill-13°F (-25°C)
Last update 30 Jan 3:55 am CST
Extended Forecast for

Tolstoy SD

  • Today

    Today: Mostly sunny and cold, with a high near 6. Wind chill values as low as -25. East northeast wind 7 to 14 mph.

    High: 6 °F

    Cold

  • Tonight

    Tonight: Mostly clear, with a low around -6. Wind chill values as low as -24. South wind 7 to 16 mph, with gusts as high as 24 mph.

    Low: -6 °F

    Mostly Clear

  • Saturday

    Saturday: Snow. Patchy blowing snow between noon and 3pm. High near 32. Wind chill values as low as -22. Breezy, with a south wind 16 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    High: 32 °F

    Chance Snow
    and Breezy
    then Snow and
    Patchy
    Blowing Snow

  • Saturday Night

    Saturday Night: A chance of snow before 9pm, then a chance of freezing rain between 9pm and midnight. Mostly cloudy, with a low around 21. Blustery, with a south southwest wind 13 to 20 mph becoming northwest after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 40%.

    Low: 21 °F

    Chance Wintry
    Mix then
    Mostly Cloudy
    and Blustery

  • Sunday

    Sunday: Mostly cloudy, with a high near 33. Breezy, with a northwest wind 11 to 20 mph, with gusts as high as 29 mph.

    High: 33 °F

    Partly Sunny
    and Breezy
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 13. North northwest wind 6 to 9 mph becoming east southeast after midnight.

    Low: 13 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 29. East southeast wind 10 to 13 mph.

    High: 29 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A slight chance of snow. Mostly cloudy, with a low around 19. South wind 10 to 14 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 19 °F

    Slight Chance
    Snow

  • Tuesday

    Tuesday: A chance of snow, mainly before noon. Mostly cloudy, with a high near 32. Northwest wind 14 to 16 mph. Chance of precipitation is 30%.

    High: 32 °F

    Chance Snow

Detailed Forecast

Today
Mostly sunny and cold, with a high near 6. Wind chill values as low as -25. East northeast wind 7 to 14 mph.
Tonight
Mostly clear, with a low around -6. Wind chill values as low as -24. South wind 7 to 16 mph, with gusts as high as 24 mph.
Saturday
Snow. Patchy blowing snow between noon and 3pm. High near 32. Wind chill values as low as -22. Breezy, with a south wind 16 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Saturday Night
A chance of snow before 9pm, then a chance of freezing rain between 9pm and midnight. Mostly cloudy, with a low around 21. Blustery, with a south southwest wind 13 to 20 mph becoming northwest after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 40%.
Sunday
Mostly cloudy, with a high near 33. Breezy, with a northwest wind 11 to 20 mph, with gusts as high as 29 mph.
Sunday Night
Mostly cloudy, with a low around 13. North northwest wind 6 to 9 mph becoming east southeast after midnight.
Monday
Mostly cloudy, with a high near 29. East southeast wind 10 to 13 mph.
Monday Night
A slight chance of snow. Mostly cloudy, with a low around 19. South wind 10 to 14 mph becoming northwest after midnight. Chance of precipitation is 20%.
Tuesday
A chance of snow, mainly before noon. Mostly cloudy, with a high near 32. Northwest wind 14 to 16 mph. Chance of precipitation is 30%.
Tuesday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around 16. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 27.
Wednesday Night
Mostly cloudy, with a low around 17.
Thursday
Mostly sunny, with a high near 43. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tolstoy SD
 45.19°N 99.6°W (Elev. 1903 ft)
Last Update:
3:36 am CST Jan 30, 2026
Forecast Valid:
4am CST Jan 30, 2026-6pm CST Feb 5, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation