Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains tonight, crossing the Midwest and reaching the Gulf Coast Friday night. Dangerously cold temperatures will persist across the eastern U.S. into early February. There is increasing confidence for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Overcast

21°F

-6°C

Humidity 80%
Wind Speed E 5 mph
Barometer 30.29 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 29 Jan 4:55 pm CST
Extended Forecast for

16 Miles NW Agar SD

  • Tonight

    Tonight: A slight chance of snow before 7pm, then a slight chance of snow after 1am.  Mostly cloudy, with a low around -4. East northeast wind 6 to 10 mph.  Chance of precipitation is 20%.

    Low: -4 °F

    Slight Chance
    Snow

  • Friday

    Friday: A slight chance of snow between 11am and noon.  Mostly cloudy, then gradually becoming sunny and cold, with a high near 8. Wind chill values as low as -20. East northeast wind 7 to 10 mph.  Chance of precipitation is 20%.

    High: 8 °F

    Slight Chance
    Snow then
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -4. Wind chill values as low as -22. South southeast wind 7 to 16 mph, with gusts as high as 24 mph.

    Low: -4 °F

    Partly Cloudy

  • Saturday

    Saturday: Snow, mainly after noon.  High near 34. Wind chill values as low as -18. South southeast wind 13 to 17 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 34 °F

    Chance Snow
    then Snow

  • Saturday Night

    Saturday Night: A slight chance of rain before 9pm, then a slight chance of freezing rain between 9pm and midnight.  Mostly cloudy, with a low around 25. South southwest wind 13 to 18 mph becoming northwest after midnight. Winds could gust as high as 26 mph.  Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Rain/Freezing
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 35. Northwest wind 9 to 18 mph, with gusts as high as 26 mph.

    High: 35 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16. North wind 6 to 9 mph becoming east southeast after midnight.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 28. Southeast wind around 11 mph.

    High: 28 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A slight chance of snow after midnight.  Mostly cloudy, with a low around 17. Southeast wind 10 to 13 mph becoming west northwest after midnight.  Chance of precipitation is 20%.

    Low: 17 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Tonight
A slight chance of snow before 7pm, then a slight chance of snow after 1am. Mostly cloudy, with a low around -4. East northeast wind 6 to 10 mph. Chance of precipitation is 20%.
Friday
A slight chance of snow between 11am and noon. Mostly cloudy, then gradually becoming sunny and cold, with a high near 8. Wind chill values as low as -20. East northeast wind 7 to 10 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around -4. Wind chill values as low as -22. South southeast wind 7 to 16 mph, with gusts as high as 24 mph.
Saturday
Snow, mainly after noon. High near 34. Wind chill values as low as -18. South southeast wind 13 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Saturday Night
A slight chance of rain before 9pm, then a slight chance of freezing rain between 9pm and midnight. Mostly cloudy, with a low around 25. South southwest wind 13 to 18 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 20%.
Sunday
Mostly cloudy, with a high near 35. Northwest wind 9 to 18 mph, with gusts as high as 26 mph.
Sunday Night
Mostly cloudy, with a low around 16. North wind 6 to 9 mph becoming east southeast after midnight.
Monday
Mostly cloudy, with a high near 28. Southeast wind around 11 mph.
Monday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 17. Southeast wind 10 to 13 mph becoming west northwest after midnight. Chance of precipitation is 20%.
Tuesday
A slight chance of snow before noon. Partly sunny, with a high near 33. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 17.
Thursday
Mostly sunny, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles NW Agar SD
 45°N 100.29°W (Elev. 1837 ft)
4:37 pm CST Jan 29, 2026
5pm CST Jan 29, 2026-6pm CST Feb 5, 2026
 
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Additional Resources

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