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

Lake Effect Snow in the Lower Great Lakes; Rain and High Elevation Snow in the West

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. In the Western U.S., rain and higher elevation snow will continue over the Great Basin through Friday. A front will move over the Pacific Northwest Thursday afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. Read More >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

27°F

-3°C

Humidity 96%
Wind Speed SE 7 mph
Barometer 30.08 in (1020.0 mb)
Dewpoint 26°F (-3°C)
Visibility NA
Wind Chill19°F (-7°C)
Last update 12 Feb 3:56 am CST
Extended Forecast for

Grenville SD

  • Today

    Today: Sunny, with a high near 46. South southeast wind 5 to 7 mph becoming west in the afternoon.

    High: 46 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly clear, with a low around 28. West southwest wind around 6 mph.

    Low: 28 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 49. Southwest wind 6 to 9 mph.

    High: 49 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. South southwest wind 7 to 9 mph.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 48. West southwest wind 7 to 10 mph.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30. West wind around 7 mph.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 51. Southwest wind 6 to 10 mph becoming south southeast in the afternoon.

    High: 51 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 32. South southeast wind around 9 mph becoming north northeast after midnight.

    Low: 32 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 49. East northeast wind 8 to 11 mph.

    High: 49 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 46. South southeast wind 5 to 7 mph becoming west in the afternoon.
Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 28. West southwest wind around 6 mph.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 49. Southwest wind 6 to 9 mph.
Friday Night
Mostly clear, with a low around 31. South southwest wind 7 to 9 mph.
Saturday
Sunny, with a high near 48. West southwest wind 7 to 10 mph.
Saturday Night
Partly cloudy, with a low around 30. West wind around 7 mph.
Sunday
Partly sunny, with a high near 51. Southwest wind 6 to 10 mph becoming south southeast in the afternoon.
Sunday Night
Mostly cloudy, with a low around 32. South southeast wind around 9 mph becoming north northeast after midnight.
Washington's Birthday
Mostly sunny, with a high near 49. East northeast wind 8 to 11 mph.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
A chance of rain. Partly sunny, with a high near 43. Chance of precipitation is 40%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 50%.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 38. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
Last Update:
3:36 am CST Feb 12, 2026
Forecast Valid:
4am CST Feb 12, 2026-6pm CST Feb 18, 2026
 
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Additional Resources

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