Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

Lat: 44.523°NLon: 114.21611°WElev: 5026.0ft.

Partly Cloudy

81°F

27°C

Humidity 30%
Wind Speed WNW 6 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 26 Aug 06:20 PM MDT
Extended Forecast for

20 Miles WNW Mackay ID

  • Tonight

    Tonight: Isolated showers and thunderstorms before 8pm.  Partly cloudy, with a low around 54. South southwest wind 5 to 9 mph becoming north northeast in the evening.  Chance of precipitation is 20%.

    Low: 54 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly before 4pm.  Mostly sunny, with a high near 80. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 80 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 5am.  Mostly cloudy, with a low around 53. South southwest wind 6 to 9 mph, with gusts as high as 21 mph.

    Low: 53 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after noon.  Mostly cloudy, with a high near 72. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 70%.

    High: 72 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely, mainly before midnight.  Mostly cloudy, with a low around 50. West southwest wind 6 to 9 mph.  Chance of precipitation is 60%.

    Low: 50 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 71. Chance of precipitation is 60%.

    High: 71 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before midnight, then a chance of rain after midnight.  Mostly cloudy, with a low around 44. Chance of precipitation is 40%.

    Low: 44 °F

    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 8pm. Partly cloudy, with a low around 54. South southwest wind 5 to 9 mph becoming north northeast in the evening. Chance of precipitation is 20%.
Thursday
A 30 percent chance of showers and thunderstorms, mainly before 4pm. Mostly sunny, with a high near 80. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 23 mph.
Thursday Night
A 20 percent chance of showers after 5am. Mostly cloudy, with a low around 53. South southwest wind 6 to 9 mph, with gusts as high as 21 mph.
Friday
Showers likely, mainly after noon. Mostly cloudy, with a high near 72. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Friday Night
Showers likely, mainly before midnight. Mostly cloudy, with a low around 50. West southwest wind 6 to 9 mph. Chance of precipitation is 60%.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Saturday Night
A chance of showers and thunderstorms before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 44. Chance of precipitation is 40%.
Sunday
Sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 41.
Monday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73.
Monday Night
A 30 percent chance of rain. Partly cloudy, with a low around 47.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
A 20 percent chance of rain. Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
20 Miles WNW Mackay ID
 44.01°N 114°W (Elev. 6588 ft)
5:31 pm MDT Aug 26, 2026
6pm MDT Aug 26, 2026-6pm MDT Sep 2, 2026
 
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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