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

Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

Breezy

23°F

-5°C

Humidity 38%
Wind Speed S 23 G 32 mph
Barometer 30.24 in (1028.5 mb)
Dewpoint 1°F (-17°C)
Visibility NA
Wind Chill7°F (-14°C)
Last update 31 Jan 12:56 pm CST
Extended Forecast for

Grenville SD

  • This Afternoon

    This Afternoon: Snow likely, mainly after 4pm. Patchy blowing snow after 4pm. Cloudy, with a high near 25. Breezy, with a south wind 21 to 23 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

    High: 25 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Tonight

    Tonight: Snow and freezing rain before 9pm, then snow likely between 9pm and 1am, then a chance of snow and freezing rain after 1am. Patchy blowing snow before 7pm. Temperature falling to near 19 by 8pm, then rising to around 27 during the remainder of the night. Breezy, with a south wind 15 to 23 mph becoming west after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 80%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

    Low: 19 °F⇑

    Wintry Mix
    and Patchy
    Blowing Snow

  • Sunday

    Sunday: A chance of snow and freezing rain before 8am, then a slight chance of snow between 8am and noon. Mostly cloudy, with a temperature falling to around 25 by 5pm. Northwest wind 13 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 30 °F⇓

    Chance Wintry
    Mix then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 8. Northwest wind 6 to 11 mph becoming northeast after midnight.

    Low: 8 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of snow after noon. Mostly cloudy, with a high near 16. East northeast wind around 7 mph. Chance of precipitation is 20%.

    High: 16 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Monday Night

    Monday Night: A slight chance of snow. Mostly cloudy, with a low around 3. East northeast wind around 7 mph. Chance of precipitation is 20%.

    Low: 3 °F

    Slight Chance
    Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 18. East northeast wind around 6 mph becoming west southwest in the afternoon.

    High: 18 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 11. West wind 6 to 9 mph.

    Low: 11 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 28. Northwest wind around 10 mph.

    High: 28 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Snow likely, mainly after 4pm. Patchy blowing snow after 4pm. Cloudy, with a high near 25. Breezy, with a south wind 21 to 23 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow and freezing rain before 9pm, then snow likely between 9pm and 1am, then a chance of snow and freezing rain after 1am. Patchy blowing snow before 7pm. Temperature falling to near 19 by 8pm, then rising to around 27 during the remainder of the night. Breezy, with a south wind 15 to 23 mph becoming west after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 80%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Sunday
A chance of snow and freezing rain before 8am, then a slight chance of snow between 8am and noon. Mostly cloudy, with a temperature falling to around 25 by 5pm. Northwest wind 13 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 8. Northwest wind 6 to 11 mph becoming northeast after midnight.
Monday
A slight chance of snow after noon. Mostly cloudy, with a high near 16. East northeast wind around 7 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of snow. Mostly cloudy, with a low around 3. East northeast wind around 7 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 18. East northeast wind around 6 mph becoming west southwest in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 11. West wind 6 to 9 mph.
Wednesday
Mostly cloudy, with a high near 28. Northwest wind around 10 mph.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Patchy blowing snow. Mostly sunny, with a high near 38.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 28.
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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:
1:11 pm CST Jan 31, 2026
Forecast Valid:
1pm CST Jan 31, 2026-6pm CST Feb 6, 2026
 
Forecast Discussion
 
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Additional Resources

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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