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

Hailey, Friedman Memorial Airport (KSUN)

Lat: 43.5°NLon: 114.3°WElev: 5318.0ft.

Mostly Cloudy

32°F

0°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 26 Dec 02:15 AM MST
Extended Forecast for

16 Miles ENE Sun Valley ID

Winter Storm Warning until December 27, 05:00am
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning until December 27, 05:00am

    NOW until 5:00am Sat

    Winter Storm Warning

  • Overnight

    Low: 20 °F

    Heavy Snow

  • Friday

    Friday: Snow, mainly before 10am. The snow could be heavy at times.  Temperature falling to around 13 by 5pm. Wind chill values as low as -4. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 43 mph.  Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

    High: 21 °F

    Breezy. Heavy
    Snow then
    Chance Snow

  • Friday Night

    Friday Night: Snow likely.  Mostly cloudy, with a low around 4. Wind chill values as low as -14. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 40 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 4 °F

    Snow Likely
    and Breezy

  • Saturday

    Saturday: Snow likely, mainly before 11am.  Partly sunny and cold, with a high near 8. Wind chill values as low as -18. Breezy, with a west northwest wind 17 to 23 mph, with gusts as high as 37 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 8 °F

    Snow Likely
    and Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -8. North northwest wind 15 to 18 mph, with gusts as high as 25 mph.

    Low: -8 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny and cold, with a high near 8.

    High: 8 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 1.

    Low: 1 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 16.

    High: 16 °F

    Sunny

Detailed Forecast

Overnight
Snow. The snow could be heavy at times. Steady temperature around 20. South southwest wind 18 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 10 to 14 inches possible.
Friday
Snow, mainly before 10am. The snow could be heavy at times. Temperature falling to around 13 by 5pm. Wind chill values as low as -4. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.
Friday Night
Snow likely. Mostly cloudy, with a low around 4. Wind chill values as low as -14. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Saturday
Snow likely, mainly before 11am. Partly sunny and cold, with a high near 8. Wind chill values as low as -18. Breezy, with a west northwest wind 17 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
Partly cloudy, with a low around -8. North northwest wind 15 to 18 mph, with gusts as high as 25 mph.
Sunday
Sunny and cold, with a high near 8.
Sunday Night
Mostly clear, with a low around 1.
Monday
Sunny, with a high near 16.
Monday Night
Mostly cloudy, with a low around 9.
Tuesday
Partly sunny, with a high near 21.
Tuesday Night
Partly cloudy, with a low around 15.
Wednesday
Mostly sunny, with a high near 25.
Wednesday Night
Mostly cloudy, with a low around 17.
New Year's Day
Partly sunny, with a high near 25.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles ENE Sun Valley ID
 43.77°N 114.02°W (Elev. 9820 ft)
10:31 pm MST Dec 25, 2025
2am MST Dec 26, 2025-6pm MST Jan 1, 2026
 
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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