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

Pacific Storm System Moves Inland; Strong Storm in Alaska

A Pacific storm system will bring low elevation/valley rain and mountain snow as it moves inland to the central Great Basin through the central Rockies through Thursday. Scattered thunderstorms are likely from California into the Great Basin. A large low pressure system continues to bring snow, blizzard conditions, damaging winds, and mixed precipitation along the Bering Sea and Southwest Alaska. Read More >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

37°F

3°C

Humidity 59%
Wind Speed S 3 mph
Barometer 30.20 in (1024.4 mb)
Dewpoint 24°F (-4°C)
Visibility NA
Last update 11 Feb 9:56 am CST
Extended Forecast for

Grenville SD

  • Today

    Today: Sunny, with a high near 45. Light and variable wind becoming west southwest around 6 mph in the afternoon.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 29. South southeast wind around 7 mph.

    Low: 29 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 47. South wind around 6 mph becoming west southwest in the afternoon.

    High: 47 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Southwest wind around 6 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 50. Southwest wind 6 to 10 mph.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 32. South southwest wind 7 to 9 mph.

    Low: 32 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 50. West wind 7 to 10 mph.

    High: 50 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31. West wind around 8 mph.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 53. West southwest wind 7 to 10 mph becoming south southeast in the afternoon.

    High: 53 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 45. Light and variable wind becoming west southwest around 6 mph in the afternoon.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 29. South southeast wind around 7 mph.
Thursday
Sunny, with a high near 47. South wind around 6 mph becoming west southwest in the afternoon.
Thursday Night
Mostly clear, with a low around 29. Southwest wind around 6 mph.
Friday
Sunny, with a high near 50. Southwest wind 6 to 10 mph.
Friday Night
Mostly clear, with a low around 32. South southwest wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 50. West wind 7 to 10 mph.
Saturday Night
Partly cloudy, with a low around 31. West wind around 8 mph.
Sunday
Partly sunny, with a high near 53. West southwest wind 7 to 10 mph becoming south southeast in the afternoon.
Sunday Night
Mostly cloudy, with a low around 35.
Washington's Birthday
Mostly sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
A chance of rain. Mostly cloudy, with a high near 50. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.37°W (Elev. 1795 ft)
Last Update:
9:46 am CST Feb 11, 2026
Forecast Valid:
10am CST Feb 11, 2026-6pm CST Feb 17, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation