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

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

61°F

16°C

Humidity 54%
Wind Speed SE 6 mph
Barometer 29.89 in (1012.0 mb)
Dewpoint 44°F (7°C)
Visibility NA
Last update 20 Mar 3:56 pm CDT
Extended Forecast for

Grenville SD

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 63. West southwest wind around 6 mph.

    High: 63 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 45. Light and variable wind becoming south southwest 8 to 13 mph in the evening. Winds could gust as high as 21 mph.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 72. West wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain and snow between 1am and 4am, then a slight chance of snow after 4am. Increasing clouds, with a low around 30. Blustery, with a north wind 16 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Blustery.
    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Sunday

    Sunday: Partly sunny, with a high near 41. North wind 13 to 16 mph, with gusts as high as 25 mph.

    High: 41 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 25. North northwest wind 6 to 10 mph becoming east southeast after midnight.

    Low: 25 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 50. South southeast wind 7 to 17 mph, with gusts as high as 26 mph.

    High: 50 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. South wind 10 to 14 mph becoming northeast after midnight. Winds could gust as high as 22 mph.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 51. Northeast wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 51 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 63. West southwest wind around 6 mph.
Tonight
Partly cloudy, with a low around 45. Light and variable wind becoming south southwest 8 to 13 mph in the evening. Winds could gust as high as 21 mph.
Saturday
Mostly sunny, with a high near 72. West wind 11 to 14 mph, with gusts as high as 22 mph.
Saturday Night
A slight chance of rain and snow between 1am and 4am, then a slight chance of snow after 4am. Increasing clouds, with a low around 30. Blustery, with a north wind 16 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 41. North wind 13 to 16 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 25. North northwest wind 6 to 10 mph becoming east southeast after midnight.
Monday
Partly sunny, with a high near 50. South southeast wind 7 to 17 mph, with gusts as high as 26 mph.
Monday Night
Mostly cloudy, with a low around 30. South wind 10 to 14 mph becoming northeast after midnight. Winds could gust as high as 22 mph.
Tuesday
Partly sunny, with a high near 51. Northeast wind 9 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 56.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 33. Chance of precipitation is 20%.
Thursday
Partly sunny, with a high near 43. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
Last Update:
4:46 pm CDT Mar 20, 2026
Forecast Valid:
4pm CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
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Additional Resources

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Chance of Precipitation