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.

62°F

17°C

Humidity 84%
Wind Speed NA
Barometer 30.13 in (1019.3 mb)
Dewpoint 57°F (14°C)
Visibility NA
Last update 22 Aug 8:56 pm CDT
Extended Forecast for

6 Miles ENE Grenville SD

  • Tonight

    Tonight: Partly cloudy, with a low around 55. Calm wind becoming east southeast around 5 mph after midnight.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 77. Southeast wind 6 to 10 mph.

    High: 77 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 61. Southeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    Low: 61 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 78. South southeast wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 63. Southwest wind around 8 mph. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 81. West southwest wind 8 to 18 mph, with gusts as high as 31 mph.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. West northwest wind 8 to 15 mph.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 78. Northwest wind 9 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 78 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. North northwest wind 6 to 11 mph becoming light after midnight.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 55. Calm wind becoming east southeast around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 77. Southeast wind 6 to 10 mph.
Sunday Night
A chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 61. Southeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Monday
A chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 78. South southeast wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 63. Southwest wind around 8 mph. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 81. West southwest wind 8 to 18 mph, with gusts as high as 31 mph.
Tuesday Night
Mostly clear, with a low around 61. West northwest wind 8 to 15 mph.
Wednesday
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 78. Northwest wind 9 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 59. North northwest wind 6 to 11 mph becoming light after midnight.
Thursday
Sunny, with a high near 78.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. Chance of precipitation is 20%.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ENE Grenville SD
 45.5°N 97.28°W (Elev. 1841 ft)
Last Update:
9:06 pm CDT Aug 22, 2026
Forecast Valid:
9pm CDT Aug 22, 2026-6pm CDT Aug 29, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation