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.

5°F

-15°C

Humidity 63%
Wind Speed S 13 mph
Barometer 30.42 in (1035.2 mb)
Dewpoint -5°F (-21°C)
Visibility NA
Wind Chill-12°F (-24°C)
Last update 31 Jan 8:56 am CST
Extended Forecast for

Grenville SD

  • Today

    Today: Snow, mainly after 2pm.  Patchy blowing snow after 4pm. High near 25. Wind chill values as low as -18. Breezy, with a south wind 13 to 23 mph, with gusts as high as 41 mph.  Chance of precipitation is 90%. Total daytime snow accumulation of less than one inch possible.

    High: 25 °F

    Mostly Sunny
    then Snow and
    Patchy
    Blowing Snow

  • Tonight

    Tonight: Snow, mainly before 2am.  Patchy blowing snow before 11pm, then patchy blowing snow after 4am. Temperature rising to around 29 by 5am. Breezy, with a south southwest wind 15 to 23 mph becoming west after midnight. Winds could gust as high as 39 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Snow and
    Patchy
    Blowing Snow

  • Sunday

    Sunday: A slight chance of snow before 7am.  Patchy blowing snow before 2pm. Mostly cloudy, with a temperature falling to around 25 by 5pm. Northwest wind 13 to 18 mph, with gusts as high as 29 mph.  Chance of precipitation is 20%.

    High: 31 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 9. Northwest wind 6 to 10 mph becoming east northeast after midnight.

    Low: 9 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 19. East wind 6 to 8 mph.

    High: 19 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of snow, mainly before midnight.  Mostly cloudy, with a low around 7. East wind around 9 mph.  Chance of precipitation is 30%.

    Low: 7 °F

    Chance Snow

  • Tuesday

    Tuesday: A slight chance of snow before noon.  Partly sunny, with a high near 18. Northeast wind 6 to 8 mph.  Chance of precipitation is 20%.

    High: 18 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 8. North wind 6 to 8 mph becoming west in the evening.

    Low: 8 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 27. West wind 8 to 10 mph.

    High: 27 °F

    Partly Sunny

Detailed Forecast

Today
Snow, mainly after 2pm. Patchy blowing snow after 4pm. High near 25. Wind chill values as low as -18. Breezy, with a south wind 13 to 23 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than one inch possible.
Tonight
Snow, mainly before 2am. Patchy blowing snow before 11pm, then patchy blowing snow after 4am. Temperature rising to around 29 by 5am. Breezy, with a south southwest wind 15 to 23 mph becoming west after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Sunday
A slight chance of snow before 7am. Patchy blowing snow before 2pm. Mostly cloudy, with a temperature falling to around 25 by 5pm. Northwest wind 13 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 9. Northwest wind 6 to 10 mph becoming east northeast after midnight.
Monday
Mostly cloudy, with a high near 19. East wind 6 to 8 mph.
Monday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 7. East wind around 9 mph. Chance of precipitation is 30%.
Tuesday
A slight chance of snow before noon. Partly sunny, with a high near 18. Northeast wind 6 to 8 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 8. North wind 6 to 8 mph becoming west in the evening.
Wednesday
Partly sunny, with a high near 27. West wind 8 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 20.
Thursday
Patchy blowing snow. Partly sunny, with a high near 38.
Thursday Night
Mostly cloudy, with a low around 18.
Friday
Partly sunny, with a high near 28.
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.37°W (Elev. 1795 ft)
8:46 am CST Jan 31, 2026
9am CST Jan 31, 2026-6pm CST Feb 6, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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