Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

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

Clear

70°F

21°C

Humidity 28%
Wind Speed NW 6 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 19 Aug 10:20 PM MDT
Extended Forecast for

22 Miles NNW Mackay ID

  • Tonight

    Tonight: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. Light south southwest wind becoming west southwest 5 to 10 mph in the afternoon.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. Southwest wind 3 to 8 mph.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 9pm, then rain likely, mainly between 9pm and midnight.  Mostly cloudy, with a low around 59. South wind around 7 mph becoming north northeast in the evening.  Chance of precipitation is 60%.

    Low: 59 °F

    Showers
    Likely then
    Slight Chance
    Rain

  • Saturday

    Saturday: A slight chance of rain, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 72. Chance of precipitation is 70%.

    High: 72 °F

    Slight Chance
    Rain then
    Showers
    Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of rain before midnight.  Mostly cloudy, with a low around 55.

    Low: 55 °F

    Chance Rain
    then Partly
    Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 55. Calm wind.
Thursday
Sunny, with a high near 80. Light south southwest wind becoming west southwest 5 to 10 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 60. Southwest wind 3 to 8 mph.
Friday
Mostly sunny, with a high near 80. Calm wind becoming south 5 to 8 mph in the afternoon.
Friday Night
Showers likely and possibly a thunderstorm before 9pm, then rain likely, mainly between 9pm and midnight. Mostly cloudy, with a low around 59. South wind around 7 mph becoming north northeast in the evening. Chance of precipitation is 60%.
Saturday
A slight chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 55.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73.
Sunday Night
Mostly clear, with a low around 51.
Monday
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 71.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 53.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 71.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 53.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
22 Miles NNW Mackay ID
 44.21°N 113.71°W (Elev. 7484 ft)
5:31 pm MDT Aug 19, 2026
10pm MDT Aug 19, 2026-6pm MDT Aug 26, 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