Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, 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

64°F

18°C

Humidity 34%
Wind Speed W 6 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 19 Aug 12:15 AM MDT
Extended Forecast for

18 Miles NW Mackay ID

  • Overnight

    Overnight: Mostly clear, with a low around 50. Light northwest wind.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. Light northwest wind increasing to 5 to 10 mph in the afternoon.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54. West northwest wind 5 to 10 mph becoming light and variable  in the evening.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86. Light south southwest wind becoming west southwest 6 to 11 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57. West wind 5 to 9 mph becoming calm  after midnight.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight.  Mostly cloudy, with a low around 58. Chance of precipitation is 50%.

    Low: 58 °F

    Chance
    Showers 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 79. Chance of precipitation is 70%.

    High: 79 °F

    Slight Chance
    Rain then
    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before midnight.  Partly cloudy, with a low around 53.

    Low: 53 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 50. Light northwest wind.
Wednesday
Sunny, with a high near 81. Light northwest wind increasing to 5 to 10 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 54. West northwest wind 5 to 10 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 86. Light south southwest wind becoming west southwest 6 to 11 mph in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 57. West wind 5 to 9 mph becoming calm after midnight.
Friday
Mostly sunny, with a high near 86.
Friday Night
A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.
Saturday
A slight chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Saturday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 53.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 51.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 52.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
18 Miles NW Mackay ID
 44.09°N 113.87°W (Elev. 6250 ft)
12:31 am MDT Aug 19, 2026
12am MDT Aug 19, 2026-6pm MDT Aug 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database