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

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

68°F

20°C

Humidity 100%
Wind Speed S 7 mph
Barometer 29.96 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 2 Aug 8:15 am CDT
Extended Forecast for

Lower Brule SD

  • Today

    Today: Patchy smoke after 9am. Mostly sunny and hot, with a high near 93. Breezy, with a south southeast wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 93 °F

    Patchy Smoke
    and Breezy

  • Tonight

    Tonight: Patchy smoke between 1am and 2am. Partly cloudy, with a low around 70. Breezy, with a south southeast wind 20 to 23 mph, with gusts as high as 34 mph.

    Low: 70 °F

    Patchy Smoke
    and Breezy

  • Monday

    Monday: Patchy smoke between 2pm and 5pm. Partly sunny and hot, with a high near 91. Breezy, with a southeast wind around 21 mph becoming west northwest in the afternoon. Winds could gust as high as 31 mph.

    High: 91 °F

    Breezy.
    Mostly Sunny
    then Patchy
    Smoke

  • Monday Night

    Monday Night: A slight chance of showers after 1am. Patchy smoke before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 60. Breezy, with a north wind 19 to 24 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 20%.

    Low: 60 °F

    Patchy Smoke
    and Breezy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 1pm. Partly sunny, with a high near 72. North northwest wind around 8 mph. Chance of precipitation is 20%.

    High: 72 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57. North wind around 6 mph becoming light and variable after midnight.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79. Calm wind becoming south southwest 5 to 8 mph in the morning.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60. South wind 8 to 11 mph.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 84. West southwest wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy smoke after 9am. Mostly sunny and hot, with a high near 93. Breezy, with a south southeast wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 34 mph.
Tonight
Patchy smoke between 1am and 2am. Partly cloudy, with a low around 70. Breezy, with a south southeast wind 20 to 23 mph, with gusts as high as 34 mph.
Monday
Patchy smoke between 2pm and 5pm. Partly sunny and hot, with a high near 91. Breezy, with a southeast wind around 21 mph becoming west northwest in the afternoon. Winds could gust as high as 31 mph.
Monday Night
A slight chance of showers after 1am. Patchy smoke before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 60. Breezy, with a north wind 19 to 24 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of showers before 1pm. Partly sunny, with a high near 72. North northwest wind around 8 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 57. North wind around 6 mph becoming light and variable after midnight.
Wednesday
Mostly sunny, with a high near 79. Calm wind becoming south southwest 5 to 8 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 60. South wind 8 to 11 mph.
Thursday
Mostly sunny, with a high near 84. West southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 63.
Friday
Mostly sunny, with a high near 89.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 20%.
Saturday
Mostly sunny and hot, with a high near 90.
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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:
7:36 am CDT Aug 2, 2026
Forecast Valid:
8am CDT Aug 2, 2026-6pm CDT Aug 8, 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