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

Challis - Challis Airport (KLLJ)

Lat: 44.523°NLon: 114.21611°WElev: 5026.0ft.

Rain

38°F

3°C

Humidity 85%
Wind Speed S 10 MPH
Barometer 29.78 in (1008.47 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 25 Dec 06:55 AM MST
Extended Forecast for

19 Miles NE Mackay ID

Winter Weather Advisory December 25, 07:01am until December 25, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 25, 07:01am until December 25, 05:00pm

    NOW until 5:00pm Thu

    Winter Weather Advisory

  • Christmas Day

    High: 33 °F

    Chance Snow

  • Tonight

    Tonight: Snow likely, mainly after 3am.  Partly cloudy, then becoming cloudy toward daybreak, with a steady temperature around 29. South southwest wind 13 to 15 mph, with gusts as high as 22 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 29 °F

    Snow Likely

  • Friday

    Friday: Snow.  Temperature falling to around 21 by 5pm. South wind 16 to 18 mph, with gusts as high as 28 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 28 °F

    Snow then
    Snow Likely

  • Friday Night

    Friday Night: A 40 percent chance of snow.  Mostly cloudy, with a low around 15. West southwest wind around 14 mph, with gusts as high as 20 mph.  New snow accumulation of less than a half inch possible.

    Low: 15 °F

    Chance Snow

  • Saturday

    Saturday: A 50 percent chance of snow.  Partly sunny, with a high near 17. West wind around 14 mph, with gusts as high as 20 mph.  New snow accumulation of less than a half inch possible.

    High: 17 °F

    Chance Snow

  • Saturday Night

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

    Low: 3 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 14.

    High: 14 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 8.

    Low: 8 °F

    Mostly Clear

Detailed Forecast

Christmas Day
A chance of snow before 1pm, then a chance of snow after 2pm. Partly sunny, with a high near 33. South southeast wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow likely, mainly after 3am. Partly cloudy, then becoming cloudy toward daybreak, with a steady temperature around 29. South southwest wind 13 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Friday
Snow. Temperature falling to around 21 by 5pm. South wind 16 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 15. West southwest wind around 14 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.
Saturday
A 50 percent chance of snow. Partly sunny, with a high near 17. West wind around 14 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Partly cloudy, with a low around 3.
Sunday
Mostly sunny, with a high near 14.
Sunday Night
Mostly clear, with a low around 8.
Monday
Sunny, with a high near 20.
Monday Night
Partly cloudy, with a low around 15.
Tuesday
Partly sunny, with a high near 26.
Tuesday Night
Partly cloudy, with a low around 20.
Wednesday
Sunny, with a high near 30.
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ABOUT THIS FORECAST

 
Point Forecast:
19 Miles NE Mackay ID
 44.1°N 113.32°W (Elev. 8199 ft)
4:31 am MST Dec 25, 2025
7am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database