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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

Salmon, Lemhi County Airport (KSMN)

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

Overcast

30°F

-1°C

Humidity 81%
Wind Speed W 3 MPH
Barometer 29.78 in (1008.47 mb)
Dewpoint 25°F (-4°C)
Visibility 7.00 mi
Last update 24 Dec 02:56 PM MST
Extended Forecast for

8 Miles SSE Salmon ID

  • This Afternoon

    This Afternoon: Rain and snow likely, mainly after 5pm. Snow level 8400 feet. Mostly cloudy, with a high near 37. South wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

    High: 37 °F

    Rain/Snow
    Likely

  • Tonight

    Tonight: Rain and snow, becoming all snow after 11pm. Low around 31. South southwest wind 10 to 14 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Rain/Snow
    then Snow

  • Christmas Day

    Christmas Day: A 30 percent chance of snow, mainly before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 35. South southwest wind 9 to 14 mph, with gusts as high as 18 mph. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Chance Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 28. South wind 15 to 17 mph, with gusts as high as 21 mph. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance Snow

  • Friday

    Friday: Snow likely, mainly before 11am. Partly sunny, with a high near 30. South southwest wind 17 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 30 °F

    Snow Likely
    then Chance
    Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 17. Breezy. New snow accumulation of less than a half inch possible.

    Low: 17 °F

    Chance Snow
    and Breezy

  • Saturday

    Saturday: A 30 percent chance of snow. Partly sunny, with a high near 19. Breezy. New snow accumulation of less than a half inch possible.

    High: 19 °F

    Chance Snow
    and Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 7.

    Low: 7 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 18.

    High: 18 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Rain and snow likely, mainly after 5pm. Snow level 8400 feet. Mostly cloudy, with a high near 37. South wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Rain and snow, becoming all snow after 11pm. Low around 31. South southwest wind 10 to 14 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Christmas Day
A 30 percent chance of snow, mainly before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 35. South southwest wind 9 to 14 mph, with gusts as high as 18 mph. New snow accumulation of less than a half inch possible.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 28. South wind 15 to 17 mph, with gusts as high as 21 mph. New snow accumulation of less than a half inch possible.
Friday
Snow likely, mainly before 11am. Partly sunny, with a high near 30. South southwest wind 17 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 17. Breezy. New snow accumulation of less than a half inch possible.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 19. Breezy. New snow accumulation of less than a half inch possible.
Saturday Night
Partly cloudy, with a low around 7.
Sunday
Mostly sunny, with a high near 18.
Sunday Night
Mostly clear, with a low around 11.
Monday
Mostly sunny, with a high near 24.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
Mostly sunny, with a high near 31.
Tuesday Night
Partly cloudy, with a low around 21.
Wednesday
Sunny, with a high near 32.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles SSE Salmon ID
 45.06°N 113.85°W (Elev. 7946 ft)
Last Update:
1:02 pm MST Dec 24, 2025
Forecast Valid:
3pm MST Dec 24, 2025-6pm MST Dec 31, 2025
 
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