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

Salmon, Lemhi County Airport (KSMN)

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

Overcast

45°F

7°C

Humidity 75%
Wind Speed NNE 3 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 05 Oct 03:05 AM MDT
Extended Forecast for

4 Miles S Salmon ID

  • Overnight

    Overnight: A 40 percent chance of rain, mainly after 5am. Mostly cloudy, with a low around 35. North northeast wind around 5 mph.

    Low: 35 °F

    Chance Rain

  • Sunday

    Sunday: A 40 percent chance of rain, mainly before noon. Patchy fog between 7am and 9am. Otherwise, mostly sunny, with a high near 54. Calm wind becoming north northeast 5 to 7 mph in the afternoon.

    High: 54 °F

    Chance Rain
    and Patchy
    Fog

  • Sunday Night

    Sunday Night: Widespread frost, mainly after 2am. Otherwise, partly cloudy, with a low around 28. North northeast wind around 6 mph becoming calm in the evening.

    Low: 28 °F

    Partly Cloudy
    then Frost

  • Monday

    Monday: Patchy fog before 10am. Widespread frost, mainly before 10am. Otherwise, sunny, with a high near 59. Calm wind.

    High: 59 °F

    Frost and
    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Widespread frost, mainly after 2am. Otherwise, clear, with a low around 28. Calm wind.

    Low: 28 °F

    Clear then
    Frost

  • Tuesday

    Tuesday: Widespread frost, mainly before 10am. Otherwise, sunny, with a high near 66.

    High: 66 °F

    Frost then
    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 31.

    Low: 31 °F

    Clear

  • Wednesday

    Wednesday: Widespread frost before 10am. Otherwise, sunny, with a high near 66.

    High: 66 °F

    Frost then
    Sunny

  • Wednesday Night

    Wednesday Night: Areas of frost after 5am. Otherwise, mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear
    then Areas
    Frost

Detailed Forecast

Overnight
A 40 percent chance of rain, mainly after 5am. Mostly cloudy, with a low around 35. North northeast wind around 5 mph.
Sunday
A 40 percent chance of rain, mainly before noon. Patchy fog between 7am and 9am. Otherwise, mostly sunny, with a high near 54. Calm wind becoming north northeast 5 to 7 mph in the afternoon.
Sunday Night
Widespread frost, mainly after 2am. Otherwise, partly cloudy, with a low around 28. North northeast wind around 6 mph becoming calm in the evening.
Monday
Patchy fog before 10am. Widespread frost, mainly before 10am. Otherwise, sunny, with a high near 59. Calm wind.
Monday Night
Widespread frost, mainly after 2am. Otherwise, clear, with a low around 28. Calm wind.
Tuesday
Widespread frost, mainly before 10am. Otherwise, sunny, with a high near 66.
Tuesday Night
Clear, with a low around 31.
Wednesday
Widespread frost before 10am. Otherwise, sunny, with a high near 66.
Wednesday Night
Areas of frost after 5am. Otherwise, mostly clear, with a low around 34.
Thursday
A slight chance of rain before noon. Mostly sunny, with a high near 66.
Thursday Night
Mostly clear, with a low around 35.
Friday
Areas of frost. Otherwise, sunny, with a high near 67.
Friday Night
A slight chance of rain. Partly cloudy, with a low around 36.
Saturday
A chance of rain. Mostly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Salmon ID
 45.12°N 113.89°W (Elev. 4034 ft)
Last Update:
2:30 pm MDT Oct 4, 2025
Forecast Valid:
3am MDT Oct 5, 2025-6pm MDT Oct 11, 2025
 
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Additional Resources

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Chance of Precipitation