Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Current conditions at

Salmon, Lemhi County Airport (KSMN)

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

freezing fog

19°F

-7°C

Humidity 92%
Wind Speed ESE 3 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 18°F (-8°C)
Visibility 0.25 mi
Last update 24 Dec 01:35 AM MST
Extended Forecast for

25 Miles SW Salmon ID

  • Overnight

    Overnight: Partly cloudy, with a low around 25. South wind around 16 mph, with gusts as high as 26 mph.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Snow, mainly after 5pm. The snow could be heavy at times.  High near 30. South wind 15 to 18 mph, with gusts as high as 32 mph.  Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 30 °F

    Mostly Sunny
    then Heavy
    Snow

  • Wednesday Night

    Wednesday Night: Snow, mainly before 1am. The snow could be heavy at times.  Low around 25. South wind 10 to 13 mph, with gusts as high as 21 mph.  Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    Low: 25 °F

    Heavy Snow

  • Christmas Day

    Christmas Day: Snow likely, mainly before 11am.  Mostly cloudy, with a high near 29. South southwest wind 11 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    High: 29 °F

    Snow Likely

  • Thursday Night

    Thursday Night: Snow likely.  Mostly cloudy, with a low around 21. South southwest wind 14 to 16 mph, with gusts as high as 28 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 21 °F

    Snow Likely

  • Friday

    Friday: Snow.  High near 23. Breezy.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 23 °F

    Snow and
    Breezy

  • Friday Night

    Friday Night: A 40 percent chance of snow.  Mostly cloudy, with a low around 12. Breezy.  New snow accumulation of less than a half inch possible.

    Low: 12 °F

    Chance Snow
    and Breezy

  • Saturday

    Saturday: A slight chance of snow before 11am.  Partly sunny, with a high near 16.

    High: 16 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 3.

    Low: 3 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 25. South wind around 16 mph, with gusts as high as 26 mph.
Wednesday
Snow, mainly after 5pm. The snow could be heavy at times. High near 30. South wind 15 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Wednesday Night
Snow, mainly before 1am. The snow could be heavy at times. Low around 25. South wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.
Christmas Day
Snow likely, mainly before 11am. Mostly cloudy, with a high near 29. South southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Thursday Night
Snow likely. Mostly cloudy, with a low around 21. South southwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Friday
Snow. High near 23. Breezy. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 12. Breezy. New snow accumulation of less than a half inch possible.
Saturday
A slight chance of snow before 11am. Partly sunny, with a high near 16.
Saturday Night
Partly cloudy, with a low around 3.
Sunday
Partly sunny, with a high near 18.
Sunday Night
Partly cloudy, with a low around 7.
Monday
Mostly sunny, with a high near 23.
Monday Night
Partly cloudy, with a low around 14.
Tuesday
Partly sunny, with a high near 27.
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ABOUT THIS FORECAST

 
Point Forecast:
25 Miles SW Salmon ID
 44.88°N 114.21°W (Elev. 8983 ft)
1:02 am MST Dec 24, 2025
1am MST Dec 24, 2025-6pm MST Dec 30, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database