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

Salmon, Lemhi County Airport (KSMN)

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

Clear

53°F

12°C

Humidity 76%
Wind Speed N 0 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 19 Aug 03:56 AM MDT
Extended Forecast for

4 Miles S Salmon ID

  • Today

    Today: Sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 51. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Calm wind becoming west around 5 mph in the afternoon.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 94. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 94 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm.  Mostly cloudy, with a low around 57. Chance of precipitation is 50%.

    Low: 57 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of rain, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 84. Chance of precipitation is 60%.

    High: 84 °F

    Chance Rain
    then Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 51. North northwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 93. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 56. Calm wind.
Friday
Mostly sunny, with a high near 94. Calm wind becoming east southeast around 5 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.
Saturday
A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Saturday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 53.
Sunday
Sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 49.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 52.
Tuesday
A chance of rain and thunderstorms. Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Salmon ID
 45.12°N 113.89°W (Elev. 4035 ft)
1:56 am MDT Aug 19, 2026
4am MDT Aug 19, 2026-6pm MDT Aug 25, 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