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

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

3°F

-16°C

Humidity 60%
Wind Speed NE 9 mph
Barometer 30.74 in (1046.0 mb)
Dewpoint -8°F (-22°C)
Visibility NA
Wind Chill-11°F (-24°C)
Last update 30 Jan 11:56 am CST
Extended Forecast for

Grenville SD

  • This Afternoon

    This Afternoon: Sunny and cold, with a high near 2. North northeast wind 5 to 8 mph.

    High: 2 °F

    Cold

  • Tonight

    Tonight: Mostly clear, with a low around -8. Wind chill values as low as -24. Light and variable wind becoming south 8 to 13 mph in the evening.

    Low: -8 °F

    Mostly Clear

  • Saturday

    Saturday: Snow likely, mainly after 4pm. Patchy blowing snow after 3pm. Increasing clouds, with a high near 23. Wind chill values as low as -24. Breezy, with a south wind 14 to 19 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 23 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Saturday Night

    Saturday Night: Snow. Patchy blowing snow before 11pm, then patchy blowing snow after 5am. Low around 17. Breezy, with a south southwest wind 23 to 28 mph becoming southwest 16 to 21 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    Low: 17 °F

    Snow and
    Patchy
    Blowing Snow

  • Sunday

    Sunday: A slight chance of snow before noon. Patchy blowing snow between 1pm and 3pm. Mostly cloudy, with a high near 30. Northwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 30 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 7. North northwest wind 6 to 13 mph becoming east after midnight.

    Low: 7 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 23. Southeast wind 6 to 10 mph.

    High: 23 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of snow. Mostly cloudy, with a low around 15. South wind around 10 mph. Chance of precipitation is 30%.

    Low: 15 °F

    Chance Snow

  • Tuesday

    Tuesday: A chance of snow. Mostly cloudy, with a high near 27. South wind around 10 mph becoming northwest in the morning. Chance of precipitation is 40%.

    High: 27 °F

    Chance Snow

Detailed Forecast

This Afternoon
Sunny and cold, with a high near 2. North northeast wind 5 to 8 mph.
Tonight
Mostly clear, with a low around -8. Wind chill values as low as -24. Light and variable wind becoming south 8 to 13 mph in the evening.
Saturday
Snow likely, mainly after 4pm. Patchy blowing snow after 3pm. Increasing clouds, with a high near 23. Wind chill values as low as -24. Breezy, with a south wind 14 to 19 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Saturday Night
Snow. Patchy blowing snow before 11pm, then patchy blowing snow after 5am. Low around 17. Breezy, with a south southwest wind 23 to 28 mph becoming southwest 16 to 21 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Sunday
A slight chance of snow before noon. Patchy blowing snow between 1pm and 3pm. Mostly cloudy, with a high near 30. Northwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 7. North northwest wind 6 to 13 mph becoming east after midnight.
Monday
Mostly cloudy, with a high near 23. Southeast wind 6 to 10 mph.
Monday Night
A chance of snow. Mostly cloudy, with a low around 15. South wind around 10 mph. Chance of precipitation is 30%.
Tuesday
A chance of snow. Mostly cloudy, with a high near 27. South wind around 10 mph becoming northwest in the morning. Chance of precipitation is 40%.
Tuesday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around 15. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 23.
Wednesday Night
Mostly cloudy, with a low around 16.
Thursday
Mostly sunny, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.37°W (Elev. 1795 ft)
Last Update:
11:41 am CST Jan 30, 2026
Forecast Valid:
12pm CST Jan 30, 2026-6pm CST Feb 5, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation