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 >

Hazardous Weather Conditions

Current conditions at

Salmon, Lemhi County Airport (KSMN)

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

light rain,mist

34°F

1°C

Humidity 93%
Wind Speed E 3 MPH
Barometer 29.72 in (1006.44 mb)
Dewpoint 32°F (0°C)
Visibility 5.00 mi
Last update 25 Dec 01:05 AM MST
Extended Forecast for

31 Miles WNW Challis ID

Winter Weather Advisory until December 25, 05:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until December 25, 05:00am

    NOW until 5:00am Thu

    Winter Weather Advisory

  • Overnight

    Low: 25 °F

    Snow

  • Christmas Day

    Christmas Day: Snow likely, mainly after 4pm. Partly sunny, with a high near 30. South wind 14 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 30 °F

    Snow Likely

  • Thursday Night

    Thursday Night: Snow likely. Patchy blowing snow before 8pm, then patchy blowing snow after 4am. Mostly cloudy, with a low around 21. South wind 17 to 20 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 21 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Friday

    Friday: Snow. Patchy blowing snow. High near 24. Wind chill values as low as zero. Breezy, with a south southwest wind 22 to 29 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 24 °F

    Snow and
    Patchy
    Blowing Snow

  • Friday Night

    Friday Night: Snow. Widespread blowing snow, mainly after 8pm. Low around 11. Windy, with a west southwest wind 25 to 31 mph, with gusts as high as 43 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 11 °F

    Snow and
    Blowing Snow

  • Saturday

    Saturday: Snow, mainly before 11am. Widespread blowing snow, mainly before 8am. High near 14. Breezy. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 14 °F

    Snow and
    Blowing Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -2.

    Low: -2 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 15.

    High: 15 °F

    Mostly Sunny

Detailed Forecast

Overnight
Snow, mainly before 3am. Low around 25. South wind around 14 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 3 inches possible.
Christmas Day
Snow likely, mainly after 4pm. Partly sunny, with a high near 30. South wind 14 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow likely. Patchy blowing snow before 8pm, then patchy blowing snow after 4am. Mostly cloudy, with a low around 21. South wind 17 to 20 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Friday
Snow. Patchy blowing snow. High near 24. Wind chill values as low as zero. Breezy, with a south southwest wind 22 to 29 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Friday Night
Snow. Widespread blowing snow, mainly after 8pm. Low around 11. Windy, with a west southwest wind 25 to 31 mph, with gusts as high as 43 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Saturday
Snow, mainly before 11am. Widespread blowing snow, mainly before 8am. High near 14. Breezy. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Saturday Night
Partly cloudy, with a low around -2.
Sunday
Mostly sunny, with a high near 15.
Sunday Night
Mostly clear, with a low around 5.
Monday
Mostly sunny, with a high near 24.
Monday Night
Mostly cloudy, with a low around 14.
Tuesday
Partly sunny, with a high near 29.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Sunny, with a high near 31.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
31 Miles WNW Challis ID
 44.76°N 114.76°W (Elev. 9058 ft)
Last Update:
1:02 am MST Dec 25, 2025
Forecast Valid:
1am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation