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.

45°F

7°C

Humidity 83%
Wind Speed SW 3 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 40°F (4°C)
Visibility NA
Last update 8 Oct 7:56 am CDT
Extended Forecast for

3 Miles NNE Grenville SD

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 65. Calm wind becoming south around 5 mph in the afternoon.

    High: 65 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 46. Southeast wind 5 to 9 mph.

    Low: 46 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75. South southeast wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65. South wind 13 to 18 mph, with gusts as high as 31 mph.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 80. Breezy, with a south southwest wind 20 to 23 mph, with gusts as high as 38 mph.

    High: 80 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57. South southwest wind 14 to 16 mph, with gusts as high as 29 mph.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 66. North wind around 15 mph, with gusts as high as 25 mph.

    High: 66 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 40. North wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 40 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Columbus Day

    Columbus Day: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 51. North wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 51 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 65. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 46. Southeast wind 5 to 9 mph.
Friday
Mostly sunny, with a high near 75. South southeast wind 10 to 15 mph, with gusts as high as 26 mph.
Friday Night
Mostly clear, with a low around 65. South wind 13 to 18 mph, with gusts as high as 31 mph.
Saturday
Sunny, with a high near 80. Breezy, with a south southwest wind 20 to 23 mph, with gusts as high as 38 mph.
Saturday Night
Mostly clear, with a low around 57. South southwest wind 14 to 16 mph, with gusts as high as 29 mph.
Sunday
Partly sunny, with a high near 66. North wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 40. North wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Columbus Day
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 51. North wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 37.
Tuesday
Partly sunny, with a high near 53.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 40. Chance of precipitation is 20%.
Wednesday
A chance of showers. Mostly sunny, with a high near 59. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Grenville SD
 45.5°N 97.37°W (Elev. 1821 ft)
Last Update:
8:21 am CDT Oct 8, 2026
Forecast Valid:
8am CDT Oct 8, 2026-6pm CDT Oct 14, 2026
 
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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