Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

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

Clear

70°F

21°C

Humidity 40%
Wind Speed N 0 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 17 Aug 10:20 PM MDT
Extended Forecast for

28 Miles N Mackay ID

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. Light south southeast wind.

    Low: 54 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 74. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon.

    High: 74 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 52. Northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 52 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 76. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. West northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of rain before midnight.  Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance Rain
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 54. Light south southeast wind.
Tuesday
Partly sunny, with a high near 74. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 52. Northwest wind 5 to 7 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 76. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 56. West northwest wind 5 to 8 mph becoming calm in the evening.
Thursday
Sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 60.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81.
Friday Night
A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 60.
Saturday
A 50 percent chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 76.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 55.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 53.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
28 Miles N Mackay ID
 44.31°N 113.64°W (Elev. 6978 ft)
5:31 pm MDT Aug 17, 2026
10pm MDT Aug 17, 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