Heavy Snow in the Central/Southern Rockies; Below Average Temperatures in the Central and Eastern US

Moderate to heavy snowfall is expected in the central/southern Rockies and adjacent High Plains today. Lake-enhanced snowfall is expected downwind of the Great Lakes today. Showers and thunderstorms will be possible this evening into tonight across the western Gulf Coast states. Temperatures across much of the central and eastern CONUS will remain below average and chilly to end the week. 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 69%
Wind Speed NW 17 mph
Barometer 30.32 in (1031.1 mb)
Dewpoint -5°F (-21°C)
Visibility NA
Wind Chill-17°F (-27°C)
Last update 3 Dec 1:56 pm CST
Extended Forecast for

Grenville SD

  • This Afternoon

    This Afternoon: Mostly sunny and cold, with a high near 9. Wind chill values as low as -18. Northwest wind 8 to 10 mph.

    High: 9 °F

    Cold

  • Tonight

    Tonight: Partly cloudy, with a temperature falling to near -6 by 10pm, then rising to around 2 during the remainder of the night. Wind chill values as low as -19. Northwest wind 6 to 13 mph becoming south southwest after midnight.

    Low: -6 °F

    Partly Cloudy

  • Thursday

    Thursday: Patchy blowing snow between 10am and 5pm. Partly sunny, with a high near 27. Breezy, with a south wind 14 to 21 mph, with gusts as high as 33 mph.

    High: 27 °F

    Patchy
    Blowing Snow
    and Breezy

  • Thursday Night

    Thursday Night: A slight chance of snow after midnight.  Mostly cloudy, with a low around 21. West wind 8 to 16 mph, with gusts as high as 26 mph.  Chance of precipitation is 20%.

    Low: 21 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday

    Friday: A slight chance of snow before noon.  Mostly cloudy, with a high near 27. West wind 8 to 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.

    High: 27 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 9. West northwest wind 8 to 10 mph becoming north after midnight.

    Low: 9 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow.  Mostly cloudy, with a high near 15. North northeast wind 9 to 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 30%.

    High: 15 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -9. North wind 7 to 10 mph.

    Low: -9 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny and cold, with a high near 10. East northeast wind 7 to 9 mph becoming south in the afternoon.

    High: 10 °F

    Cold

Detailed Forecast

This Afternoon
Mostly sunny and cold, with a high near 9. Wind chill values as low as -18. Northwest wind 8 to 10 mph.
Tonight
Partly cloudy, with a temperature falling to near -6 by 10pm, then rising to around 2 during the remainder of the night. Wind chill values as low as -19. Northwest wind 6 to 13 mph becoming south southwest after midnight.
Thursday
Patchy blowing snow between 10am and 5pm. Partly sunny, with a high near 27. Breezy, with a south wind 14 to 21 mph, with gusts as high as 33 mph.
Thursday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 21. West wind 8 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Friday
A slight chance of snow before noon. Mostly cloudy, with a high near 27. West wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 9. West northwest wind 8 to 10 mph becoming north after midnight.
Saturday
A chance of snow. Mostly cloudy, with a high near 15. North northeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around -9. North wind 7 to 10 mph.
Sunday
Partly sunny and cold, with a high near 10. East northeast wind 7 to 9 mph becoming south in the afternoon.
Sunday Night
Mostly cloudy, with a low around 1.
Monday
A slight chance of snow. Partly sunny, with a high near 27. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
A chance of snow. Mostly cloudy, with a high near 31. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.37°W (Elev. 1795 ft)
2:36 pm CST Dec 3, 2025
2pm CST Dec 3, 2025-6pm CST Dec 9, 2025
 
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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