National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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

86°F

30°C

Humidity 14%
Wind Speed NW 10 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 18 Aug 03:05 PM MDT
Extended Forecast for

21 Miles ESE Challis ID

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 74. West northwest wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 74 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 52. West northwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 20 mph.

    Low: 52 °F

    Mostly Clear

  • 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: Mostly clear, with a low around 57. Northwest wind around 6 mph becoming calm after midnight.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 80 °F

    Sunny

  • Thursday Night

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

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.

    High: 74 °F

    Mostly Cloudy
    then Showers
    Likely

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 74. West northwest wind 10 to 13 mph, with gusts as high as 21 mph.
Tonight
Mostly clear, with a low around 52. West northwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 76. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 57. Northwest wind around 6 mph becoming calm after midnight.
Thursday
Sunny, with a high near 80. Calm wind becoming west 5 to 7 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 80.
Friday Night
A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 61.
Saturday
Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of rain before midnight. Partly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 54.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 73.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 55.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
21 Miles ESE Challis ID
 44.37°N 113.83°W (Elev. 7008 ft)
Last Update:
12:31 pm MDT Aug 18, 2026
Forecast Valid:
3pm MDT Aug 18, 2026-6pm MDT Aug 25, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation