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

67°F

19°C

Humidity 19%
Wind Speed S 13 mph
Barometer 29.92 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 28 Mar 6:35 pm CDT
Extended Forecast for

Fort Thompson SD

Red Flag Warning March 28, 06:44pm until March 28, 07:00pm
Click here for hazard details and duration
...
  •  
    Red Flag Warning March 28, 06:44pm until March 28, 07:00pm

    NOW until 7:00pm Sat

    Red Flag Warning

  • Tonight

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 75. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41. North northeast wind 5 to 7 mph becoming east southeast after midnight.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. East southeast wind 8 to 10 mph becoming north northwest in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. Breezy, with an east northeast wind 13 to 23 mph becoming north northwest after midnight. Winds could gust as high as 32 mph.

    Low: 35 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 49. Breezy, with a north northwest wind 20 to 22 mph, with gusts as high as 31 mph.

    High: 49 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 21. North northwest wind 9 to 15 mph becoming east after midnight.

    Low: 21 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of snow after 1pm. Partly sunny, with a high near 49. Breezy, with a southeast wind 10 to 15 mph increasing to 18 to 23 mph in the afternoon. Chance of precipitation is 20%.

    High: 49 °F

    Partly Sunny
    then Slight
    Chance Snow
    and Breezy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 35. South southwest wind 6 to 11 mph becoming east after midnight.
Sunday
Sunny, with a high near 75. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 41. North northeast wind 5 to 7 mph becoming east southeast after midnight.
Monday
Mostly sunny, with a high near 77. East southeast wind 8 to 10 mph becoming north northwest in the afternoon.
Monday Night
Mostly cloudy, with a low around 35. Breezy, with an east northeast wind 13 to 23 mph becoming north northwest after midnight. Winds could gust as high as 32 mph.
Tuesday
Partly sunny, with a high near 49. Breezy, with a north northwest wind 20 to 22 mph, with gusts as high as 31 mph.
Tuesday Night
Partly cloudy, with a low around 21. North northwest wind 9 to 15 mph becoming east after midnight.
Wednesday
A slight chance of snow after 1pm. Partly sunny, with a high near 49. Breezy, with a southeast wind 10 to 15 mph increasing to 18 to 23 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
A slight chance of rain and snow before 1am, then a slight chance of snow. Partly cloudy, with a low around 32. Breezy, with a southeast wind around 22 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Thursday
A chance of rain and snow before 1pm, then a chance of rain. Partly sunny, with a high near 52. Windy. Chance of precipitation is 30%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 34. Breezy. Chance of precipitation is 40%.
Friday
A chance of rain. Mostly cloudy, with a high near 54. Breezy. Chance of precipitation is 40%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Blustery. Chance of precipitation is 50%.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 48. Windy. Chance of precipitation is 30%.
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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:
6:36 pm CDT Mar 28, 2026
Forecast Valid:
6pm CDT Mar 28, 2026-6pm CDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation