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

64°F

18°C

Humidity 81%
Wind Speed S 5 mph
Barometer 30.19 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 16 Sep 7:15 pm CDT
Extended Forecast for

Lower Brule SD

  • Tonight

    Tonight: Partly cloudy, with a low around 56. East southeast wind 5 to 11 mph.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers between 4pm and 5pm. Mostly cloudy, with a high near 73. East southeast wind 5 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 73 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers and thunderstorms, mainly before 3am. Some of the storms could produce heavy rainfall. Low around 62. Breezy, with an east wind 14 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 62 °F

    Heavy Rain
    and Breezy

  • Friday

    Friday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Mostly cloudy, with a high near 73. East southeast wind 11 to 16 mph becoming west northwest in the morning. Chance of precipitation is 40%.

    High: 73 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Cloudy, with a low around 58. North wind 9 to 13 mph.

    Low: 58 °F

    Cloudy

  • Saturday

    Saturday: Cloudy, with a high near 66. North northeast 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 57. Northeast wind around 9 mph. Chance of precipitation is 20%.

    Low: 57 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 1pm. Cloudy, with a high near 65. East northeast wind 8 to 10 mph. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 55. East northeast wind around 8 mph. Chance of precipitation is 60%.

    Low: 55 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. East southeast wind 5 to 11 mph.
Thursday
A slight chance of showers between 4pm and 5pm. Mostly cloudy, with a high near 73. East southeast wind 5 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Thursday Night
Showers and thunderstorms, mainly before 3am. Some of the storms could produce heavy rainfall. Low around 62. Breezy, with an east wind 14 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Friday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Mostly cloudy, with a high near 73. East southeast wind 11 to 16 mph becoming west northwest in the morning. Chance of precipitation is 40%.
Friday Night
Cloudy, with a low around 58. North wind 9 to 13 mph.
Saturday
Cloudy, with a high near 66. North northeast wind around 10 mph.
Saturday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 57. Northeast wind around 9 mph. Chance of precipitation is 20%.
Sunday
Showers likely, mainly after 1pm. Cloudy, with a high near 65. East northeast wind 8 to 10 mph. Chance of precipitation is 60%.
Sunday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 55. East northeast wind around 8 mph. Chance of precipitation is 60%.
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 54. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 70.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 56. 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:
Lower Brule SD
 44.07°N 99.58°W (Elev. 1444 ft)
Last Update:
7:21 pm CDT Sep 16, 2026
Forecast Valid:
7pm CDT Sep 16, 2026-6pm CDT Sep 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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