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

Hazardous Weather Conditions

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

83°F

28°C

Humidity 16%
Wind Speed SW 16 G 25 mph
Barometer 29.59 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 16 Apr 3:35 pm CDT
Extended Forecast for

Fort Thompson SD

Red Flag Warning until April 16, 08:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning until April 16, 08:00pm

    NOW until 8:00pm Thu

    Red Flag Warning

  • This Afternoon

    High: 82 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: A slight chance of showers before 10pm, then a slight chance of showers after 5am. Mostly cloudy, with a low around 37. Breezy, with a southwest wind 10 to 15 mph becoming north northwest 17 to 22 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 20%.

    Low: 37 °F

    Slight Chance
    Showers and
    Breezy

  • Friday

    Friday: A chance of showers, mainly between 8am and 10am. Cloudy, with a high near 45. Breezy, with a north northwest wind 24 to 28 mph, with gusts as high as 37 mph. Chance of precipitation is 40%.

    High: 45 °F

    Breezy.
    Chance
    Showers then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 25. Blustery, with a northwest wind 13 to 22 mph, with gusts as high as 31 mph.

    Low: 25 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Saturday

    Saturday: Sunny, with a high near 52. Breezy, with a northwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 52 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27. Northwest wind 13 to 18 mph becoming light west after midnight. Winds could gust as high as 26 mph.

    Low: 27 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 62. Light and variable wind becoming east 5 to 8 mph in the morning.

    High: 62 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. East wind 10 to 13 mph.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a steady temperature around 82. Breezy, with a southwest wind 17 to 20 mph, with gusts as high as 28 mph.
Tonight
A slight chance of showers before 10pm, then a slight chance of showers after 5am. Mostly cloudy, with a low around 37. Breezy, with a southwest wind 10 to 15 mph becoming north northwest 17 to 22 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 20%.
Friday
A chance of showers, mainly between 8am and 10am. Cloudy, with a high near 45. Breezy, with a north northwest wind 24 to 28 mph, with gusts as high as 37 mph. Chance of precipitation is 40%.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 25. Blustery, with a northwest wind 13 to 22 mph, with gusts as high as 31 mph.
Saturday
Sunny, with a high near 52. Breezy, with a northwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 32 mph.
Saturday Night
Partly cloudy, with a low around 27. Northwest wind 13 to 18 mph becoming light west after midnight. Winds could gust as high as 26 mph.
Sunday
Mostly sunny, with a high near 62. Light and variable wind becoming east 5 to 8 mph in the morning.
Sunday Night
Mostly clear, with a low around 36. East wind 10 to 13 mph.
Monday
Sunny, with a high near 78. South southwest wind 11 to 15 mph.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Mostly sunny, with a high near 83. Breezy.
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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:
3:36 pm CDT Apr 16, 2026
Forecast Valid:
3pm CDT Apr 16, 2026-6pm CDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation