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Hazardous Weather Conditions

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

71°F

22°C

Humidity 100%
Wind Speed Calm
Barometer 29.87 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 25 Jul 7:15 am CDT
Extended Forecast for

Lower Brule SD

Heat Advisory July 25, 01:00pm until July 26, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Mostly sunny and hot, with a high near 98. Heat index values as high as 102. Light and variable wind becoming southeast 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 98 °F

    Hot

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly between 4am and 5am. Mostly cloudy, with a low around 73. Southeast wind 10 to 13 mph becoming south southwest after midnight. Chance of precipitation is 40%.

    Low: 73 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers before 7am. Cloudy through mid morning, then gradual clearing and hot, with a high near 100. Heat index values as high as 105. South southeast wind 9 to 11 mph becoming west northwest in the afternoon. Chance of precipitation is 10%.

    High: 100 °F

    Slight Chance
    Showers then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. North wind 7 to 9 mph.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny and hot, with a high near 95. East wind 6 to 8 mph.

    High: 95 °F

    Hot

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 71. East wind 6 to 8 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 93. Southeast wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 93 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70. South southeast wind 8 to 11 mph.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 93. South southeast wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny and hot, with a high near 98. Heat index values as high as 102. Light and variable wind becoming southeast 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
A chance of showers and thunderstorms, mainly between 4am and 5am. Mostly cloudy, with a low around 73. Southeast wind 10 to 13 mph becoming south southwest after midnight. Chance of precipitation is 40%.
Sunday
A slight chance of showers before 7am. Cloudy through mid morning, then gradual clearing and hot, with a high near 100. Heat index values as high as 105. South southeast wind 9 to 11 mph becoming west northwest in the afternoon. Chance of precipitation is 10%.
Sunday Night
Mostly clear, with a low around 72. North wind 7 to 9 mph.
Monday
Mostly sunny and hot, with a high near 95. East wind 6 to 8 mph.
Monday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 71. East wind 6 to 8 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny and hot, with a high near 93. Southeast wind 7 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 70. South southeast wind 8 to 11 mph.
Wednesday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 93. South southeast wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 68. Chance of precipitation is 20%.
Friday
Mostly sunny and hot, with a high near 91.
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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:
7:16 am CDT Jul 25, 2026
Forecast Valid:
7am CDT Jul 25, 2026-6pm CDT Jul 31, 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