Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

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

Clear

70°F

21°C

Humidity 43%
Wind Speed N 0 MPH
Barometer 30.2 in (1022.69 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 18 Aug 10:55 AM MDT
Extended Forecast for

13 Miles NNW Mackay ID

  • Today

    Today: A slight chance of showers and thunderstorms between 2pm and 5pm.  Snow level 12500 feet rising to 13100 feet. Sunny early, then becoming mostly cloudy, with a high near 59. West wind 9 to 16 mph, with gusts as high as 24 mph.  Chance of precipitation is 20%.

    High: 59 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of rain before 7pm.  Snow level 13000 feet lowering to 11900 feet after midnight . Mostly clear, with a low around 43. West northwest wind 6 to 15 mph, with gusts as high as 23 mph.

    Low: 43 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 61. West wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 61 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47. West northwest wind 5 to 9 mph.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 65. Southwest wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 61.

    High: 61 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers and thunderstorms between 2pm and 5pm. Snow level 12500 feet rising to 13100 feet. Sunny early, then becoming mostly cloudy, with a high near 59. West wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tonight
A 20 percent chance of rain before 7pm. Snow level 13000 feet lowering to 11900 feet after midnight . Mostly clear, with a low around 43. West northwest wind 6 to 15 mph, with gusts as high as 23 mph.
Wednesday
Sunny, with a high near 61. West wind 6 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 47. West northwest wind 5 to 9 mph.
Thursday
Sunny, with a high near 65. Southwest wind 6 to 13 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 50.
Friday
Mostly sunny, with a high near 66.
Friday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 51.
Saturday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 61.
Saturday Night
A 20 percent chance of rain before midnight. Snow level 13500 feet lowering to 12700 feet after midnight . Partly cloudy, with a low around 45.
Sunday
A 30 percent chance of showers and thunderstorms. Snow level 12600 feet rising to 13100 feet in the afternoon. Mostly sunny, with a high near 59.
Sunday Night
A 20 percent chance of rain. Snow level 13200 feet lowering to 12600 feet after midnight . Partly cloudy, with a low around 44.
Monday
A 40 percent chance of showers and thunderstorms. Snow level 12600 feet rising to 13200 feet in the afternoon. Mostly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NNW Mackay ID
 44.08°N 113.71°W (Elev. 10135 ft)
5:31 am MDT Aug 18, 2026
11am MDT Aug 18, 2026-6pm MDT Aug 24, 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