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.

53°F

12°C

Humidity 61%
Wind Speed SW 12 mph
Barometer 29.82 in (1010.7 mb)
Dewpoint 40°F (4°C)
Visibility NA
Wind Chill49°F (9°C)
Last update 18 Mar 1:56 pm CDT
Extended Forecast for

Grenville SD

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 51. West southwest wind around 7 mph.

    High: 51 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 31. West wind 6 to 9 mph becoming north after midnight.

    Low: 31 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 11am. Otherwise, partly sunny, with a high near 54. Northwest wind 6 to 14 mph becoming south southwest in the morning.

    High: 54 °F

    Areas Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38. South southwest wind 10 to 13 mph becoming west after midnight.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 60. West wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 60 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38. Northwest wind around 10 mph becoming southeast in the evening.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 65. Southwest wind 11 to 17 mph becoming north northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 65 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain and snow after 1am. Mostly cloudy, with a low around 28. North northeast wind around 17 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Sunday

    Sunday: Partly sunny, with a high near 37. North wind around 17 mph, with gusts as high as 25 mph.

    High: 37 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 51. West southwest wind around 7 mph.
Tonight
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 31. West wind 6 to 9 mph becoming north after midnight.
Thursday
Areas of fog before 11am. Otherwise, partly sunny, with a high near 54. Northwest wind 6 to 14 mph becoming south southwest in the morning.
Thursday Night
Partly cloudy, with a low around 38. South southwest wind 10 to 13 mph becoming west after midnight.
Friday
Mostly sunny, with a high near 60. West wind 9 to 15 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around 38. Northwest wind around 10 mph becoming southeast in the evening.
Saturday
Partly sunny, with a high near 65. Southwest wind 11 to 17 mph becoming north northwest in the afternoon. Winds could gust as high as 26 mph.
Saturday Night
A slight chance of rain and snow after 1am. Mostly cloudy, with a low around 28. North northeast wind around 17 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 37. North wind around 17 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 23.
Monday
Mostly sunny, with a high near 46. Breezy.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Mostly cloudy, with a high near 49.
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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:
2:11 pm CDT Mar 18, 2026
Forecast Valid:
2pm CDT Mar 18, 2026-6pm CDT Mar 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation