Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

4°F

-16°C

Humidity 60%
Wind Speed W 12 mph
Barometer 30.22 in (1028.7 mb)
Dewpoint -7°F (-22°C)
Visibility NA
Wind Chill-12°F (-24°C)
Last update 19 Jan 3:56 pm CST
Extended Forecast for

Grenville SD

  • M.L.King Day

    M.L.King Day: Partly sunny and cold, with a high near 4. West northwest wind 9 to 11 mph.

    High: 4 °F

    Cold

  • Tonight

    Tonight: Mostly clear, with a low around -7. Wind chill values as low as -19. West northwest wind around 8 mph.

    Low: -7 °F

    Mostly Clear

  • Tuesday

    Tuesday: Snow.  High near 15. West southwest wind 7 to 9 mph becoming south southeast in the afternoon.  Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 15 °F

    Partly Sunny
    then Snow

  • Tuesday Night

    Tuesday Night: Snow likely before 11pm, then a slight chance of snow after 5am.  Mostly cloudy, with a low around 9. Southwest wind 6 to 14 mph becoming west northwest after midnight. Winds could gust as high as 23 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 9 °F

    Snow Likely
    then Slight
    Chance Snow

  • Wednesday

    Wednesday: Snow likely, mainly before noon.  Patchy blowing snow after 11am. Mostly cloudy, with a high near 21. Blustery, with a west southwest wind 15 to 22 mph becoming northwest in the afternoon. Winds could gust as high as 34 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 21 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 0. West northwest wind 14 to 18 mph, with gusts as high as 30 mph.

    Low: 0 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny and cold, with a high near 5. Northwest wind 14 to 16 mph, with gusts as high as 26 mph.

    High: 5 °F

    Cold

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -24. North northwest wind 8 to 14 mph, with gusts as high as 23 mph.

    Low: -24 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -13. Northwest wind 6 to 8 mph.

    High: -13 °F

    Cold

Detailed Forecast

M.L.King Day
Partly sunny and cold, with a high near 4. West northwest wind 9 to 11 mph.
Tonight
Mostly clear, with a low around -7. Wind chill values as low as -19. West northwest wind around 8 mph.
Tuesday
Snow. High near 15. West southwest wind 7 to 9 mph becoming south southeast in the afternoon. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Tuesday Night
Snow likely before 11pm, then a slight chance of snow after 5am. Mostly cloudy, with a low around 9. Southwest wind 6 to 14 mph becoming west northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday
Snow likely, mainly before noon. Patchy blowing snow after 11am. Mostly cloudy, with a high near 21. Blustery, with a west southwest wind 15 to 22 mph becoming northwest in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Mostly cloudy, with a low around 0. West northwest wind 14 to 18 mph, with gusts as high as 30 mph.
Thursday
Partly sunny and cold, with a high near 5. Northwest wind 14 to 16 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around -24. North northwest wind 8 to 14 mph, with gusts as high as 23 mph.
Friday
Mostly sunny and cold, with a high near -13. Northwest wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around -20.
Saturday
Mostly sunny and cold, with a high near -1.
Saturday Night
Partly cloudy, with a low around -10.
Sunday
Mostly sunny, with a high near 12.
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
3:36 pm CST Jan 19, 2026
4pm CST Jan 19, 2026-6pm CST Jan 25, 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