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Hazardous Weather Conditions

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

44°F

7°C

Humidity 96%
Wind Speed N 12 mph
Barometer 29.78 in (1007.8 mb)
Dewpoint 43°F (6°C)
Visibility NA
Wind Chill38°F (3°C)
Last update 13 Apr 4:56 am CDT
Extended Forecast for

Grenville SD

Dense Fog Advisory until April 13, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until April 13, 09:00am

    NOW until 9:00am Mon

    Dense Fog Advisory

  • Overnight

    Low: 40 °F

    Dense Fog

  • Monday

    Monday: A chance of showers and thunderstorms, mainly after 3pm. Widespread dense fog, mainly before 7am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 62. East wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 62 °F

    Slight Chance
    Showers and
    Dense Fog
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 40. Northeast wind 7 to 13 mph becoming north northwest after midnight. Chance of precipitation is 30%.

    Low: 40 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 58. West wind 7 to 10 mph.

    High: 58 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. North wind around 7 mph becoming southeast after midnight.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after 1pm. Mostly sunny, with a high near 67. Southeast wind 6 to 9 mph. Chance of precipitation is 20%.

    High: 67 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers before 1am. Mostly clear, with a low around 45. East wind 7 to 9 mph becoming south after midnight. Chance of precipitation is 20%.

    Low: 45 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 73. South wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 73 °F

    Sunny

Detailed Forecast

Overnight
Widespread dense fog. Otherwise, cloudy, with a low around 40. Northeast wind around 10 mph.
Monday
A chance of showers and thunderstorms, mainly after 3pm. Widespread dense fog, mainly before 7am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 62. East wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 40. Northeast wind 7 to 13 mph becoming north northwest after midnight. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 58. West wind 7 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 40. North wind around 7 mph becoming southeast after midnight.
Wednesday
A slight chance of showers after 1pm. Mostly sunny, with a high near 67. Southeast wind 6 to 9 mph. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers before 1am. Mostly clear, with a low around 45. East wind 7 to 9 mph becoming south after midnight. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 73. South wind 10 to 16 mph, with gusts as high as 26 mph.
Thursday Night
A chance of showers, mainly after 1am. Partly cloudy, with a low around 40. South southeast wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Friday
A chance of rain showers before 10am, then a chance of rain and snow showers. Mostly cloudy, with a high near 49. Breezy. Chance of precipitation is 40%.
Friday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 24. Blustery. Chance of precipitation is 20%.
Saturday
A slight chance of snow showers. Partly sunny, with a high near 41. Breezy. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 25.
Sunday
Sunny, with a high near 53.
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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:
4:36 am CDT Apr 13, 2026
Forecast Valid:
5am CDT Apr 13, 2026-6pm CDT Apr 19, 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