Heavy Great Lakes Snow through Friday; Watching Potential for Major Winter Storm Late Week into this Weekend

Heavy lake effect snow will continue in the Great Lakes into Wednesday before another storm brings a widespread general snow followed by another round of heavy lake effect snow. A wide-ranging winter storm will produce great swaths of heavy snow, sleet, and treacherous freezing rain from the southern Rockies/Plains and Mid-South starting Friday and shifting toward the East Coast through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

11°F

-12°C

Humidity 67%
Wind Speed SW 13 mph
Barometer 30.10 in (1023.9 mb)
Dewpoint 2°F (-17°C)
Visibility NA
Wind Chill-4°F (-20°C)
Last update 20 Jan 10:56 am CST
Extended Forecast for

Grenville SD

  • Today

    Today: A chance of snow after noon.  Mostly cloudy, with a high near 16. South southwest wind 7 to 9 mph.  Chance of precipitation is 50%.

    High: 16 °F

    Chance Snow

  • Tonight

    Tonight: A chance of snow, mainly before 9pm.  Mostly cloudy, with a low around 11. West northwest wind 9 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 40%.

    Low: 11 °F

    Chance Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Snow likely, mainly before noon.  Patchy blowing snow after 9am. Mostly cloudy, with a high near 22. Blustery, with a northwest wind 16 to 21 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 41 mph.  Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    High: 22 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Wednesday Night

    Wednesday Night: Patchy blowing snow before 8pm. Mostly cloudy, with a low around 0. Blustery, with a west northwest wind 14 to 22 mph, with gusts as high as 33 mph.

    Low: 0 °F

    Patchy
    Blowing Snow
    and Blustery
    then Mostly
    Cloudy

  • Thursday

    Thursday: Partly sunny and cold, with a high near 5. Northwest wind 14 to 18 mph, with gusts as high as 29 mph.

    High: 5 °F

    Cold

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -24. North northwest wind 9 to 15 mph, with gusts as high as 24 mph.

    Low: -24 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and cold, with a high near -13. West northwest wind 6 to 9 mph.

    High: -13 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -20. West northwest wind around 7 mph becoming south after midnight.

    Low: -20 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near -3. South southwest wind 7 to 9 mph.

    High: -3 °F

    Cold

Detailed Forecast

Today
A chance of snow after noon. Mostly cloudy, with a high near 16. South southwest wind 7 to 9 mph. Chance of precipitation is 50%.
Tonight
A chance of snow, mainly before 9pm. Mostly cloudy, with a low around 11. West northwest wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Wednesday
Snow likely, mainly before noon. Patchy blowing snow after 9am. Mostly cloudy, with a high near 22. Blustery, with a northwest wind 16 to 21 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Wednesday Night
Patchy blowing snow before 8pm. Mostly cloudy, with a low around 0. Blustery, with a west northwest wind 14 to 22 mph, with gusts as high as 33 mph.
Thursday
Partly sunny and cold, with a high near 5. Northwest wind 14 to 18 mph, with gusts as high as 29 mph.
Thursday Night
Partly cloudy, with a low around -24. North northwest wind 9 to 15 mph, with gusts as high as 24 mph.
Friday
Sunny and cold, with a high near -13. West northwest wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around -20. West northwest wind around 7 mph becoming south after midnight.
Saturday
Mostly sunny and cold, with a high near -3. South southwest wind 7 to 9 mph.
Saturday Night
Partly cloudy, with a low around -12.
Sunday
Mostly sunny and cold, with a high near 7.
Sunday Night
Partly cloudy, with a low around -6.
Monday
Mostly sunny, with a high near 17.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.37°W (Elev. 1795 ft)
10:36 am CST Jan 20, 2026
11am CST Jan 20, 2026-6pm CST Jan 26, 2026
 
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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