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.

Mostly Cloudy

46°F

8°C

Humidity 52%
Wind Speed ESE 6 MPH
Barometer 29.78 in (1008.47 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 25 Dec 01:35 PM MST
Extended Forecast for

9 Miles NNE Mackay ID

  • Christmas Day

    Christmas Day: Snow likely, mainly after 4pm. The snow could be heavy at times.  Partly sunny, with a high near 27. South southwest wind around 17 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. Total daytime snow accumulation of 1 to 3 inches possible.

    High: 27 °F

    Heavy Snow

  • Tonight

    Tonight: Snow, mainly after 3am. The snow could be heavy at times.  Low around 20. Breezy, with a south southwest wind 17 to 22 mph, with gusts as high as 38 mph.  Chance of precipitation is 80%. New snow accumulation of 5 to 9 inches possible.

    Low: 20 °F

    Heavy Snow
    and Breezy

  • Friday

    Friday: Snow. The snow could be heavy at times.  Temperature falling to around 14 by 5pm. Wind chill values as low as -2. Breezy, with a west southwest wind 21 to 26 mph, with gusts as high as 44 mph.  Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 22 °F

    Breezy. Heavy
    Snow then
    Snow Likely

  • Friday Night

    Friday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 9. Wind chill values as low as -8. West southwest wind 16 to 21 mph, with gusts as high as 32 mph.  New snow accumulation of around an inch possible.

    Low: 9 °F

    Chance Snow

  • Saturday

    Saturday: Snow likely.  Mostly cloudy, with a high near 12. West wind 18 to 20 mph, with gusts as high as 31 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 12 °F

    Snow Likely

  • Saturday Night

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

    Low: -3 °F

    Partly Cloudy
    and Blustery

  • Sunday

    Sunday: Mostly sunny and cold, with a high near 10.

    High: 10 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 2.

    Low: 2 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 18.

    High: 18 °F

    Sunny

Detailed Forecast

Christmas Day
Snow likely, mainly after 4pm. The snow could be heavy at times. Partly sunny, with a high near 27. South southwest wind around 17 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Snow, mainly after 3am. The snow could be heavy at times. Low around 20. Breezy, with a south southwest wind 17 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 80%. New snow accumulation of 5 to 9 inches possible.
Friday
Snow. The snow could be heavy at times. Temperature falling to around 14 by 5pm. Wind chill values as low as -2. Breezy, with a west southwest wind 21 to 26 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 9. Wind chill values as low as -8. West southwest wind 16 to 21 mph, with gusts as high as 32 mph. New snow accumulation of around an inch possible.
Saturday
Snow likely. Mostly cloudy, with a high near 12. West wind 18 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
Partly cloudy, with a low around -3. Blustery.
Sunday
Mostly sunny and cold, with a high near 10.
Sunday Night
Mostly clear, with a low around 2.
Monday
Sunny, with a high near 18.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Partly sunny, with a high near 24.
Tuesday Night
Partly cloudy, with a low around 17.
Wednesday
Sunny, with a high near 26.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles NNE Mackay ID
 44.04°N 113.52°W (Elev. 9600 ft)
10:31 am MST Dec 25, 2025
1pm MST Dec 25, 2025-6pm MST Dec 31, 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