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

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Fort Thompson SD

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly between 4am and 5am. Mostly cloudy, with a low around 59. East wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 9am. Mostly cloudy through mid morning, then gradual clearing, with a high near 81. Northwest wind 5 to 8 mph. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    T-storms then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. North northwest wind 5 to 7 mph becoming south in the evening.

    Low: 59 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny and hot, with a high near 93. South wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 93 °F

    Hot

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 67. South southeast wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Sunny and hot, with a high near 100. Southeast wind 9 to 17 mph, with gusts as high as 26 mph.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 68. Southeast wind 8 to 13 mph.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. South southwest wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72. Southeast wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms, mainly between 4am and 5am. Mostly cloudy, with a low around 59. East wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 30%.
Wednesday
A slight chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 9am. Mostly cloudy through mid morning, then gradual clearing, with a high near 81. Northwest wind 5 to 8 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 59. North northwest wind 5 to 7 mph becoming south in the evening.
Juneteenth
Sunny and hot, with a high near 93. South wind 6 to 15 mph, with gusts as high as 24 mph.
Thursday Night
A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 67. South southeast wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Friday
Sunny and hot, with a high near 100. Southeast wind 9 to 17 mph, with gusts as high as 26 mph.
Friday Night
Mostly clear, with a low around 68. Southeast wind 8 to 13 mph.
Saturday
Sunny and hot, with a high near 100. South southwest wind 8 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 72. Southeast wind 10 to 14 mph, with gusts as high as 22 mph.
Sunday
Sunny and hot, with a high near 90.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 75. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Tuesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 71. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fort Thompson SD
 44.05°N 99.4°W (Elev. 1447 ft)
Last Update:
8:01 pm CDT Jun 17, 2025
Forecast Valid:
8pm CDT Jun 17, 2025-6pm CDT Jun 24, 2025
 
Forecast Discussion
 
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Additional Resources

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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