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.

Partly Cloudy

38°F

3°C

Humidity 84%
Wind Speed N 17 G 30 mph
Barometer 29.88 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 22 Mar 12:35 am CDT
Extended Forecast for

Fort Thompson SD

  • Overnight

    Overnight: Mostly cloudy, with a low around 32. Breezy, with a north wind 17 to 22 mph, with gusts as high as 39 mph.

    Low: 32 °F

    Mostly Cloudy
    and Breezy

  • Sunday

    Sunday: A chance of sprinkles with a slight chance of rain before 8am, then a chance of sprinkles between 8am and 10am. Cloudy through mid morning, then gradual clearing, with a high near 51. North wind 10 to 14 mph. Chance of precipitation is 20%.

    High: 51 °F

    Slight Chance
    Rain then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 30. Northwest wind around 7 mph becoming southeast in the evening.

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: A chance of sprinkles before 1pm, then a slight chance of rain after 1pm. Partly sunny, with a high near 60. East southeast wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 20%.

    High: 60 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35. South wind 8 to 16 mph, with gusts as high as 24 mph.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 63. East wind 8 to 13 mph.

    High: 63 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39. East wind 9 to 13 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 72. East northeast wind 8 to 11 mph becoming west in the afternoon.

    High: 72 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40. North wind 10 to 15 mph.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 32. Breezy, with a north wind 17 to 22 mph, with gusts as high as 39 mph.
Sunday
A chance of sprinkles with a slight chance of rain before 8am, then a chance of sprinkles between 8am and 10am. Cloudy through mid morning, then gradual clearing, with a high near 51. North wind 10 to 14 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 30. Northwest wind around 7 mph becoming southeast in the evening.
Monday
A chance of sprinkles before 1pm, then a slight chance of rain after 1pm. Partly sunny, with a high near 60. East southeast wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 35. South wind 8 to 16 mph, with gusts as high as 24 mph.
Tuesday
Mostly cloudy, with a high near 63. East wind 8 to 13 mph.
Tuesday Night
Mostly cloudy, with a low around 39. East wind 9 to 13 mph.
Wednesday
Partly sunny, with a high near 72. East northeast wind 8 to 11 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 40. North wind 10 to 15 mph.
Thursday
Mostly sunny, with a high near 55. Breezy.
Thursday Night
Mostly cloudy, with a low around 25.
Friday
Partly sunny, with a high near 51.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 55.
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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:
12:36 am CDT Mar 22, 2026
Forecast Valid:
12am CDT Mar 22, 2026-6pm CDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation