National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms Likely in the Central U.S.; Flooding Possible for portions of Oklahoma/Texas/Arkansas and the Marianas.

Severe thunderstorms are likely from the southern Plains to the Midwest through Friday. Large hail, damaging winds, and tornadoes are all possible. An Enhanced (level 3 of 5) risk is in effect. Flash flooding is possible across portions of Oklahoma, Texas, and Arkansas on Friday. A Slight (level 2 of 4) risk is in effect. Flooding rain may impact Guam and the Marianas through next week. Read More >

Hazardous Weather Conditions

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

39°F

4°C

Humidity 100%
Wind Speed SE 12 mph
Barometer 29.85 in (1012.5 mb)
Dewpoint 39°F (4°C)
Visibility NA
Wind Chill32°F (0°C)
Last update 5 Mar 10:56 am CST
Extended Forecast for

Grenville SD

Dense Fog Advisory March 5, 11:01am until March 5, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory March 5, 11:01am until March 5, 12:00pm

    NOW until 12:00pm Thu

    Dense Fog Advisory

  • Today

    High: 54 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of rain, mainly after 4am. Areas of fog after 3am. Otherwise, partly cloudy, with a low around 32. South southeast wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.

    Low: 32 °F

    Partly Cloudy
    then Chance
    Rain and
    Areas Fog

  • Friday

    Friday: A chance of rain, snow, and freezing rain before 4pm, then a chance of snow between 4pm and 5pm, then a chance of snow and freezing rain after 5pm. Areas of fog before 9am. Otherwise, mostly cloudy, with a temperature falling to around 30 by 5pm. Breezy, with a north northwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 50%.

    High: 41 °F⇓

    Chance Wintry
    Mix and Areas
    Fog

  • Friday Night

    Friday Night: Snow and freezing rain likely before 9pm, then a chance of snow between 9pm and 4am. Cloudy, then gradually becoming partly cloudy, with a low around 21. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of around an inch possible.

    Low: 21 °F

    Wintry Mix
    Likely and
    Blustery then
    Chance Snow

  • Saturday

    Saturday: Sunny, with a high near 40. Northwest wind 13 to 18 mph becoming southwest in the afternoon. Winds could gust as high as 28 mph.

    High: 40 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 31 mph.

    Low: 34 °F

    Partly Cloudy
    and Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 52. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 52 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 37. Southwest wind around 16 mph, with gusts as high as 25 mph.

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Today
Partly sunny, with a high near 54. South southeast wind around 18 mph, with gusts as high as 31 mph.
Tonight
A chance of rain, mainly after 4am. Areas of fog after 3am. Otherwise, partly cloudy, with a low around 32. South southeast wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.
Friday
A chance of rain, snow, and freezing rain before 4pm, then a chance of snow between 4pm and 5pm, then a chance of snow and freezing rain after 5pm. Areas of fog before 9am. Otherwise, mostly cloudy, with a temperature falling to around 30 by 5pm. Breezy, with a north northwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 50%.
Friday Night
Snow and freezing rain likely before 9pm, then a chance of snow between 9pm and 4am. Cloudy, then gradually becoming partly cloudy, with a low around 21. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of around an inch possible.
Saturday
Sunny, with a high near 40. Northwest wind 13 to 18 mph becoming southwest in the afternoon. Winds could gust as high as 28 mph.
Saturday Night
Partly cloudy, with a low around 34. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 31 mph.
Sunday
Mostly sunny, with a high near 52. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 37. Southwest wind around 16 mph, with gusts as high as 25 mph.
Monday
Partly sunny, with a high near 51. West wind 13 to 16 mph becoming north northeast in the afternoon. Winds could gust as high as 24 mph.
Monday Night
A slight chance of rain and snow before midnight, then a chance of snow. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Tuesday
A chance of snow. Partly sunny, with a high near 38. Chance of precipitation is 40%.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Wednesday
A slight chance of snow. Mostly sunny, with a high near 31. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.37°W (Elev. 1795 ft)
Last Update:
10:36 am CST Mar 5, 2026
Forecast Valid:
11am CST Mar 5, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation