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

76°F

24°C

Humidity 61%
Wind Speed W 5 mph
Barometer 30.17 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 1 Aug 10:55 am CDT
Extended Forecast for

5 Miles ENE Fort Thompson SD

  • Today

    Today: Mostly sunny, with a high near 83. Light and variable wind becoming east around 6 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 62. Southeast wind 8 to 10 mph.

    Low: 62 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 88. Breezy, with a south southeast wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 88 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68. Breezy, with a south southeast wind 18 to 22 mph, with gusts as high as 31 mph.

    Low: 68 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: Mostly sunny and hot, with a high near 90. Breezy, with a south wind 18 to 21 mph, with gusts as high as 29 mph.

    High: 90 °F

    Hot and
    Breezy

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am.  Mostly cloudy, with a low around 60. Breezy, with a west southwest wind 16 to 20 mph becoming north after midnight. Winds could gust as high as 28 mph.  Chance of precipitation is 30%.

    Low: 60 °F

    Slight Chance
    T-storms and
    Breezy then
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 1pm.  Partly sunny, with a high near 73. North wind 8 to 11 mph.  Chance of precipitation is 20%.

    High: 73 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57. North northeast wind 5 to 7 mph becoming light and variable.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77. Light southeast wind becoming south southeast 5 to 10 mph in the morning.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 83. Light and variable wind becoming east around 6 mph in the afternoon.
Tonight
Partly cloudy, with a low around 62. Southeast wind 8 to 10 mph.
Sunday
Mostly sunny, with a high near 88. Breezy, with a south southeast wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 33 mph.
Sunday Night
Partly cloudy, with a low around 68. Breezy, with a south southeast wind 18 to 22 mph, with gusts as high as 31 mph.
Monday
Mostly sunny and hot, with a high near 90. Breezy, with a south wind 18 to 21 mph, with gusts as high as 29 mph.
Monday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 60. Breezy, with a west southwest wind 16 to 20 mph becoming north after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 30%.
Tuesday
A slight chance of showers before 1pm. Partly sunny, with a high near 73. North wind 8 to 11 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 57. North northeast wind 5 to 7 mph becoming light and variable.
Wednesday
Mostly sunny, with a high near 77. Light southeast wind becoming south southeast 5 to 10 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 64.
Friday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ENE Fort Thompson SD
 44.08°N 99.31°W (Elev. 1667 ft)
10:36 am CDT Aug 1, 2026
11am CDT Aug 1, 2026-6pm CDT Aug 7, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database