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.

19°F

-7°C

Humidity 88%
Wind Speed SE 8 mph
Barometer 29.68 in (1008.4 mb)
Dewpoint 16°F (-9°C)
Visibility NA
Wind Chill9°F (-13°C)
Last update 17 Mar 11:56 pm CDT
Extended Forecast for

Grenville SD

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 28. West wind 7 to 10 mph.

    Low: 28 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 43. West wind around 11 mph, with gusts as high as 20 mph.

    High: 43 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 32. West southwest wind 6 to 10 mph becoming northwest after midnight.

    Low: 32 °F

    Mostly Cloudy

  • Thursday

    Thursday: Patchy fog before noon. Otherwise, mostly sunny, with a high near 49. Northwest wind 6 to 10 mph becoming southwest in the afternoon.

    High: 49 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38. South southwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 61. West northwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 61 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41. West wind around 11 mph becoming south southwest after midnight.

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 65. West wind 13 to 17 mph, with gusts as high as 26 mph.

    High: 65 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain and snow after 1am. Mostly cloudy, with a low around 30. North wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 28. West wind 7 to 10 mph.
Wednesday
Partly sunny, with a high near 43. West wind around 11 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 32. West southwest wind 6 to 10 mph becoming northwest after midnight.
Thursday
Patchy fog before noon. Otherwise, mostly sunny, with a high near 49. Northwest wind 6 to 10 mph becoming southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 38. South southwest wind around 11 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 61. West northwest wind 10 to 15 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 41. West wind around 11 mph becoming south southwest after midnight.
Saturday
Mostly sunny, with a high near 65. West wind 13 to 17 mph, with gusts as high as 26 mph.
Saturday Night
A slight chance of rain and snow after 1am. Mostly cloudy, with a low around 30. North wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 41.
Sunday Night
Partly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 44.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
A slight chance of rain and snow. Partly sunny, with a high near 48. Chance of precipitation is 20%.
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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:
12:26 am CDT Mar 18, 2026
Forecast Valid:
12am CDT Mar 18, 2026-6pm CDT Mar 24, 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