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

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Salmon, Lemhi County Airport (KSMN)

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

Clear

39°F

4°C

Humidity 44%
Wind Speed N 0 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 18 Apr 11:00 AM MDT
Extended Forecast for

8 Miles SSE Salmon ID

  • Today

    Today: Partly sunny, with a high near 44. Southwest wind 8 to 10 mph.

    High: 44 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 30. South southwest wind 9 to 11 mph.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 54. South southeast wind 7 to 9 mph.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 36. West southwest wind around 10 mph becoming south after midnight.

    Low: 36 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 60. South wind 6 to 10 mph.

    High: 60 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of rain before 9am, then rain and snow showers likely. Some thunder is also possible. Mostly cloudy, with a high near 48.

    High: 48 °F

    Rain/Snow
    Likely

Detailed Forecast

Today
Partly sunny, with a high near 44. Southwest wind 8 to 10 mph.
Tonight
Partly cloudy, with a low around 30. South southwest wind 9 to 11 mph.
Sunday
Sunny, with a high near 54. South southeast wind 7 to 9 mph.
Sunday Night
Mostly cloudy, with a low around 36. West southwest wind around 10 mph becoming south after midnight.
Monday
Mostly sunny, with a high near 60. South wind 6 to 10 mph.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Mostly sunny, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
A chance of rain before 9am, then rain and snow showers likely. Some thunder is also possible. Mostly cloudy, with a high near 48.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 34.
Thursday
Rain and snow likely. Mostly cloudy, with a high near 39.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 27.
Friday
A slight chance of snow. Mostly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles SSE Salmon ID
 45.06°N 113.85°W (Elev. 7946 ft)
Last Update:
2:01 am MDT Apr 18, 2026
Forecast Valid:
11am MDT Apr 18, 2026-6pm MDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation