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

Widespread Rain from Texas to the Central Appalachians; Heavy to Excessive Rainfall in Southern California and the Southwest

Scattered thunderstorms and widespread showers are expected from the Texas coast to the central Appalachians today. Heavy to excessive rainfall will continue in southern California into the Desert Southwest through Saturday. Heavy rain will pose a risk of flash flooding, especially across burn scar and urbanized regions. Read More >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

41°F

5°C

Humidity 62%
Wind Speed S 12 mph
Barometer 29.88 in (1013.6 mb)
Dewpoint 29°F (-2°C)
Visibility NA
Wind Chill34°F (1°C)
Last update 21 Nov 8:56 pm CST
Extended Forecast for

Grenville SD

  • Tonight

    Tonight: Increasing clouds, with a low around 34. South southwest wind 11 to 15 mph.

    Low: 34 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 49. West northwest wind 9 to 14 mph, with gusts as high as 24 mph.

    High: 49 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31. West northwest wind 6 to 8 mph becoming south southwest after midnight.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 52. South southwest wind around 10 mph, with gusts as high as 21 mph.

    High: 52 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. South wind around 9 mph.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: A chance of rain. Mostly cloudy, with a high near 48. South wind around 8 mph. Chance of precipitation is 30%.

    High: 48 °F

    Chance Rain

  • Monday Night

    Monday Night: A chance of rain before midnight, then a chance of rain and snow. Mostly cloudy, with a low around 30. West northwest wind 7 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    Low: 30 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Tuesday

    Tuesday: A chance of rain and snow before noon, then a chance of snow. Partly sunny, with a high near 35. Breezy, with a west northwest wind 17 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 40%.

    High: 35 °F

    Breezy.
    Chance
    Rain/Snow
    then Chance
    Snow

  • Tuesday Night

    Tuesday Night: A slight chance of snow. Mostly cloudy, with a low around 20. Blustery, with a west northwest wind around 21 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

    Low: 20 °F

    Slight Chance
    Snow and
    Blustery

Detailed Forecast

Tonight
Increasing clouds, with a low around 34. South southwest wind 11 to 15 mph.
Saturday
Mostly sunny, with a high near 49. West northwest wind 9 to 14 mph, with gusts as high as 24 mph.
Saturday Night
Mostly clear, with a low around 31. West northwest wind 6 to 8 mph becoming south southwest after midnight.
Sunday
Sunny, with a high near 52. South southwest wind around 10 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 36. South wind around 9 mph.
Monday
A chance of rain. Mostly cloudy, with a high near 48. South wind around 8 mph. Chance of precipitation is 30%.
Monday Night
A chance of rain before midnight, then a chance of rain and snow. Mostly cloudy, with a low around 30. West northwest wind 7 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Tuesday
A chance of rain and snow before noon, then a chance of snow. Partly sunny, with a high near 35. Breezy, with a west northwest wind 17 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 40%.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 20. Blustery, with a west northwest wind around 21 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 27. Blustery.
Wednesday Night
Mostly cloudy, with a low around 15.
Thanksgiving Day
Mostly sunny, with a high near 25.
Thursday Night
Mostly cloudy, with a low around 12.
Friday
Partly sunny, with a high near 24.
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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:
8:36 pm CST Nov 21, 2025
Forecast Valid:
9pm CST Nov 21, 2025-6pm CST Nov 28, 2025
 
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