National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

A frontal boundary extending from the western High Plains to the Southeast will focus additional showers and thunderstorms this weekend. Some of these storms may become severe, alongside frequent lightning, and isolated instances of flash flooding. Meanwhile dry conditions will continue for the Great Basin where fire weather concerns linger. For the mid-Atlantic and Northeast, seasonable weather. Read More >

Hazardous Weather Conditions

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Partly Cloudy

73°F

23°C

Humidity 77%
Wind Speed SE 14 mph
Barometer 30.06 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 2 Aug 8:55 pm CDT
Extended Forecast for

Lower Brule SD

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms after 2am. Areas of smoke. Partly cloudy, with a low around 62. Southeast wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 83. Southeast wind around 10 mph becoming northwest in the afternoon. Chance of precipitation is 10%.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly between 7pm and 1am. Partly cloudy, with a low around 62. Northeast wind 6 to 10 mph becoming south southeast after midnight. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Southeast wind 5 to 9 mph. Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. Southeast wind around 10 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Breezy, with a south southeast wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 20%.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 64. Breezy, with a south southeast wind 11 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    T-storms and
    Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 89. Southeast wind around 11 mph.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. Southeast wind 8 to 10 mph.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms after 2am. Areas of smoke. Partly cloudy, with a low around 62. Southeast wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Sunday
A slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 83. Southeast wind around 10 mph becoming northwest in the afternoon. Chance of precipitation is 10%.
Sunday Night
A chance of showers and thunderstorms, mainly between 7pm and 1am. Partly cloudy, with a low around 62. Northeast wind 6 to 10 mph becoming south southeast after midnight. Chance of precipitation is 30%.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Southeast wind 5 to 9 mph. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 65. Southeast wind around 10 mph.
Tuesday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Breezy, with a south southeast wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 64. Breezy, with a south southeast wind 11 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Wednesday
Sunny, with a high near 89. Southeast wind around 11 mph.
Wednesday Night
Mostly clear, with a low around 68. Southeast wind 8 to 10 mph.
Thursday
Mostly sunny and hot, with a high near 93.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 89.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Lower Brule SD
 44.07°N 99.58°W (Elev. 1444 ft)
Last Update:
8:47 pm CDT Aug 2, 2025
Forecast Valid:
9pm CDT Aug 2, 2025-6pm CDT Aug 9, 2025
 
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