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.

Overcast

62°F

17°C

Humidity 68%
Wind Speed NW 12 mph
Barometer 30.04 in
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 19 Jun 7:55 am CDT
Extended Forecast for

Gann Valley SD

  • Juneteenth

    Juneteenth: A chance of showers, mainly before noon. Cloudy through mid morning, then gradual clearing, with a high near 79. West northwest wind 11 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 79 °F

    Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 50. Northwest wind 5 to 13 mph becoming east northeast after midnight.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Increasing clouds, with a high near 77. East southeast wind 5 to 15 mph, with gusts as high as 23 mph.

    High: 77 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Showers likely, then showers and possibly a thunderstorm after 10pm. Low around 54. East southeast wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 54 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 66. East northeast wind 15 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    High: 66 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 49. Northeast wind 8 to 13 mph becoming light north northeast after midnight. Chance of precipitation is 40%.

    Low: 49 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of showers after 1pm. Partly sunny, with a high near 72. Light and variable wind becoming east southeast 5 to 7 mph in the morning. Chance of precipitation is 20%.

    High: 72 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. South southeast wind 5 to 7 mph becoming southwest after midnight. Chance of precipitation is 50%.

    Low: 52 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 74. West northwest wind 8 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    T-storms

Detailed Forecast

Juneteenth
A chance of showers, mainly before noon. Cloudy through mid morning, then gradual clearing, with a high near 79. West northwest wind 11 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Tonight
Partly cloudy, with a low around 50. Northwest wind 5 to 13 mph becoming east northeast after midnight.
Saturday
Increasing clouds, with a high near 77. East southeast wind 5 to 15 mph, with gusts as high as 23 mph.
Saturday Night
Showers likely, then showers and possibly a thunderstorm after 10pm. Low around 54. East southeast wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers and possibly a thunderstorm. High near 66. East northeast wind 15 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Sunday Night
A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 49. Northeast wind 8 to 13 mph becoming light north northeast after midnight. Chance of precipitation is 40%.
Monday
A slight chance of showers after 1pm. Partly sunny, with a high near 72. Light and variable wind becoming east southeast 5 to 7 mph in the morning. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. South southeast wind 5 to 7 mph becoming southwest after midnight. Chance of precipitation is 50%.
Tuesday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 74. West northwest wind 8 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 75.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 52. Chance of precipitation is 20%.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Gann Valley SD
 44.04°N 98.98°W (Elev. 1709 ft)
Last Update:
7:26 am CDT Jun 19, 2026
Forecast Valid:
8am CDT Jun 19, 2026-6pm CDT Jun 25, 2026
 
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