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

Storm Impacting the Southwest U.S.; Above Normal Temperatures Further East

A storm system will shift across the southwest U.S. through Thursday with widespread showers and isolated thunderstorms. Isolated flooding is possible. High-elevation snow is also expected in parts of Nevada and the southern Sierra Nevada range. East of this storm, above average temperatures will challenge or break daily record high temperatures this week in the southern Plains and southeast U.S. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Overcast

37°F

3°C

Humidity 100%
Wind Speed Calm
Barometer 30.08 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 18 Nov 10:55 am CST
Extended Forecast for

Fort Thompson SD

  • Today

    Today: Mostly cloudy, with a high near 44. Light and variable wind.

    High: 44 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. Southeast wind 5 to 8 mph.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 60. Southeast wind around 9 mph becoming northwest in the afternoon.

    High: 60 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 33. Northwest wind around 8 mph.

    Low: 33 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 48. Northwest wind 7 to 9 mph.

    High: 48 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 26. North northwest wind around 6 mph becoming south after midnight.

    Low: 26 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 51. South wind 5 to 9 mph.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31. Southeast wind around 8 mph becoming west after midnight.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 54. West northwest wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 54 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 44. Light and variable wind.
Tonight
Mostly cloudy, with a low around 33. Southeast wind 5 to 8 mph.
Wednesday
Mostly sunny, with a high near 60. Southeast wind around 9 mph becoming northwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 33. Northwest wind around 8 mph.
Thursday
Mostly sunny, with a high near 48. Northwest wind 7 to 9 mph.
Thursday Night
Mostly clear, with a low around 26. North northwest wind around 6 mph becoming south after midnight.
Friday
Sunny, with a high near 51. South wind 5 to 9 mph.
Friday Night
Partly cloudy, with a low around 31. Southeast wind around 8 mph becoming west after midnight.
Saturday
Mostly sunny, with a high near 54. West northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Sunny, with a high near 55.
Sunday Night
Partly cloudy, with a low around 31.
Monday
Partly sunny, with a high near 48.
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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:
10:51 am CST Nov 18, 2025
Forecast Valid:
11am CST Nov 18, 2025-6pm CST Nov 24, 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