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

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

36°F

2°C

Humidity 84%
Wind Speed Calm
Barometer 30.14 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 22 Nov 10:35 pm CST
Extended Forecast for

Fort Thompson SD

  • Tonight

    Tonight: Mostly clear, with a low around 30. Calm wind becoming south southeast around 6 mph after midnight.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 62. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 35. South southeast wind 5 to 7 mph becoming southwest after midnight.

    Low: 35 °F

    Increasing
    Clouds

  • Monday

    Monday: A slight chance of rain before noon. Mostly cloudy, with a high near 52. West southwest wind 5 to 7 mph becoming north northwest in the afternoon. Chance of precipitation is 20%.

    High: 52 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of rain after midnight. Mostly cloudy, with a low around 31. North northwest wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.

    Low: 31 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain and snow. Mostly cloudy, with a high near 39. Windy, with a northwest wind 18 to 23 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 30%.

    High: 39 °F

    Chance
    Rain/Snow and
    Windy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 19. Northwest wind 11 to 18 mph, with gusts as high as 30 mph.

    Low: 19 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 34. West northwest wind 7 to 13 mph, with gusts as high as 21 mph.

    High: 34 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 15. West northwest wind around 6 mph.

    Low: 15 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 30. Calm wind becoming south southeast around 6 mph after midnight.
Sunday
Sunny, with a high near 62. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Increasing clouds, with a low around 35. South southeast wind 5 to 7 mph becoming southwest after midnight.
Monday
A slight chance of rain before noon. Mostly cloudy, with a high near 52. West southwest wind 5 to 7 mph becoming north northwest in the afternoon. Chance of precipitation is 20%.
Monday Night
A chance of rain after midnight. Mostly cloudy, with a low around 31. North northwest wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 39. Windy, with a northwest wind 18 to 23 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 19. Northwest wind 11 to 18 mph, with gusts as high as 30 mph.
Wednesday
Sunny, with a high near 34. West northwest wind 7 to 13 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 15. West northwest wind around 6 mph.
Thanksgiving Day
Partly sunny, with a high near 30.
Thursday Night
Mostly cloudy, with a low around 16.
Friday
Partly sunny, with a high near 33.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 20%.
Saturday
A chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fort Thompson SD
 44.05°N 99.4°W (Elev. 1447 ft)
Last Update:
10:36 pm CST Nov 22, 2025
Forecast Valid:
10pm CST Nov 22, 2025-6pm CST Nov 29, 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