Severe Thunderstorms and Heavy Rain in the Mid-Atlantic; Heat Persists Across the South

Scattered severe thunderstorms and excessive rainfall are possible into the night in the Mid Atlantic, and heavy rain will shift to Virginia and the Carolinas on Friday. Severe thunderstorms are also possible in the Central Plains into the Upper MS Valley and the Deep South tonight. Dangerous heat persists across the Southern Plains and Lower MS Valley and heat will expand into the Southwest. Read More >

Current conditions at

Salmon, Lemhi County Airport (KSMN)

Lat: 45.11667°NLon: 113.88333°WElev: 4045.0ft.

Clear

63°F

17°C

Humidity 77%
Wind Speed N 0 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 21 Aug 01:20 AM MDT
Extended Forecast for

26 Miles NW Challis ID

  • Overnight

    Overnight: Mostly cloudy, with a low around 58. West northwest wind around 6 mph becoming calm.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of rain after noon.  Increasing clouds, with a high near 80. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: A 20 percent chance of rain.  Mostly cloudy, with a low around 59. East northeast wind 7 to 11 mph becoming south southwest after midnight. Winds could gust as high as 21 mph.

    Low: 59 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after noon.  Partly sunny, with a high near 73. South wind 6 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 60%.

    High: 73 °F

    Mostly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight.  Partly cloudy, with a low around 54. Southwest wind around 9 mph becoming south southeast in the evening.  Chance of precipitation is 30%.

    Low: 54 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 70. Breezy.

    High: 70 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of rain before midnight.  Mostly cloudy, with a low around 51.

    Low: 51 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 58. West northwest wind around 6 mph becoming calm.
Friday
A 20 percent chance of rain after noon. Increasing clouds, with a high near 80. Calm wind becoming west 5 to 7 mph in the afternoon.
Friday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 59. East northeast wind 7 to 11 mph becoming south southwest after midnight. Winds could gust as high as 21 mph.
Saturday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 73. South wind 6 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Saturday Night
A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight. Partly cloudy, with a low around 54. Southwest wind around 9 mph becoming south southeast in the evening. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 70. Breezy.
Sunday Night
Mostly clear, with a low around 50.
Monday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 70.
Monday Night
A slight chance of rain before midnight. Mostly cloudy, with a low around 51.
Tuesday
Sunny, with a high near 70.
Tuesday Night
Mostly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
26 Miles NW Challis ID
 44.72°N 114.66°W (Elev. 7713 ft)
12:32 am MDT Aug 21, 2026
1am MDT Aug 21, 2026-6pm MDT Aug 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database