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.

Fair

57°F

14°C

Humidity 99%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 16 Sep 11:55 pm CDT
Extended Forecast for

9 Miles SE Fort Thompson SD

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 54. Light east northeast wind.

    Low: 54 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 71. Light east northeast wind becoming east 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 71 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 59. Breezy, with an east wind 11 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 59 °F

    Heavy Rain
    and Breezy

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 9am, then a chance of showers. Mostly cloudy, with a high near 73. Breezy, with an east wind 11 to 20 mph becoming north northwest in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Showers
    Likely and
    Breezy then
    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers before 1am. Mostly cloudy, with a low around 55. North wind 8 to 11 mph. Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Cloudy, with a high near 66. North wind around 10 mph.

    High: 66 °F

    Cloudy

  • Saturday Night

    Saturday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 55. Northeast wind 6 to 9 mph. Chance of precipitation is 20%.

    Low: 55 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Cloudy, with a high near 65. East northeast wind 7 to 9 mph. Chance of precipitation is 50%.

    High: 65 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 53. East northeast wind 6 to 8 mph. Chance of precipitation is 50%.

    Low: 53 °F

    Chance
    Showers

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 54. Light east northeast wind.
Thursday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 71. Light east northeast wind becoming east 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 59. Breezy, with an east wind 11 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Friday
Showers likely and possibly a thunderstorm before 9am, then a chance of showers. Mostly cloudy, with a high near 73. Breezy, with an east wind 11 to 20 mph becoming north northwest in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A slight chance of showers before 1am. Mostly cloudy, with a low around 55. North wind 8 to 11 mph. Chance of precipitation is 20%.
Saturday
Cloudy, with a high near 66. North wind around 10 mph.
Saturday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 55. Northeast wind 6 to 9 mph. Chance of precipitation is 20%.
Sunday
A chance of showers. Cloudy, with a high near 65. East northeast wind 7 to 9 mph. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 53. East northeast wind 6 to 8 mph. Chance of precipitation is 50%.
Monday
A chance of showers, mainly after 1pm. Mostly cloudy, with a high near 66. Chance of precipitation is 30%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 71.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 54. Chance of precipitation is 30%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 73. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles SE Fort Thompson SD
 43.97°N 99.28°W (Elev. 1519 ft)
Last Update:
11:21 pm CDT Sep 16, 2026
Forecast Valid:
12am CDT Sep 17, 2026-6pm CDT Sep 23, 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

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Chance of Precipitation