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

Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Current conditions at

Salmon, Lemhi County Airport (KSMN)

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

Mostly Cloudy

36°F

2°C

Humidity 80%
Wind Speed NNE 3 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 11 Dec 08:35 AM MST
Extended Forecast for

24 Miles SSW Salmon ID

  • Today

    Today: A 20 percent chance of rain after 4pm. Partly sunny, with a high near 47. West southwest wind around 15 mph, with gusts as high as 22 mph.

    High: 47 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Tonight

    Tonight: A 10 percent chance of rain before 7pm. Mostly cloudy, with a low around 37. South wind 10 to 14 mph, with gusts as high as 18 mph.

    Low: 37 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 47. South southwest wind around 11 mph.

    High: 47 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. Southwest wind 10 to 13 mph, with gusts as high as 18 mph.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 47. Southwest wind 8 to 10 mph.

    High: 47 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

Detailed Forecast

Today
A 20 percent chance of rain after 4pm. Partly sunny, with a high near 47. West southwest wind around 15 mph, with gusts as high as 22 mph.
Tonight
A 10 percent chance of rain before 7pm. Mostly cloudy, with a low around 37. South wind 10 to 14 mph, with gusts as high as 18 mph.
Friday
Partly sunny, with a high near 47. South southwest wind around 11 mph.
Friday Night
Mostly clear, with a low around 31. Southwest wind 10 to 13 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 47. Southwest wind 8 to 10 mph.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 49.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Partly sunny, with a high near 48.
Monday Night
A chance of rain. Mostly cloudy, with a low around 37.
Tuesday
A chance of rain and snow. Snow level 7300 feet lowering to 6700 feet in the afternoon . Mostly cloudy, with a high near 44.
Tuesday Night
Rain and snow likely. Mostly cloudy, with a low around 32.
Wednesday
A chance of snow. Partly sunny, with a high near 40.
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ABOUT THIS FORECAST

 
Point Forecast:
24 Miles SSW Salmon ID
 44.85°N 114.02°W (Elev. 6099 ft)
Last Update:
1:02 am MST Dec 11, 2025
Forecast Valid:
8am MST Dec 11, 2025-6pm MST Dec 17, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation