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

45°F

7°C

Humidity 57%
Wind Speed SSE 6 MPH
Barometer 29.78 in (1008.47 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 25 Dec 01:55 PM MST
Extended Forecast for

9 Miles N Mackay ID

  • Christmas Day

    Christmas Day: Snow likely, mainly between 4pm and 5pm.  Mostly cloudy, with a steady temperature around 22. South wind around 17 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%. Total daytime snow accumulation of 1 to 3 inches possible.

    High: 22 °F

    Snow Likely

  • Tonight

    Tonight: Snow, mainly after 3am. The snow could be heavy at times.  Low around 16. Wind chill values as low as -1. Breezy, with a southwest wind 21 to 29 mph, with gusts as high as 37 mph.  Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    Low: 16 °F

    Heavy Snow
    and Breezy

  • Friday

    Friday: Snow. The snow could be heavy at times.  Temperature falling to around 11 by 5pm. Wind chill values as low as -7. Windy, with a west southwest wind 22 to 31 mph, with gusts as high as 43 mph.  Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    High: 19 °F

    Heavy Snow
    and Windy
    then Snow
    Likely and
    Breezy

  • Friday Night

    Friday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 7. Wind chill values as low as -12. Breezy, with a west southwest wind 20 to 25 mph, with gusts as high as 32 mph.  New snow accumulation of around an inch possible.

    Low: 7 °F

    Chance Snow
    and Breezy

  • Saturday

    Saturday: Snow likely.  Mostly cloudy and cold, with a high near 8. Breezy, with a west wind 18 to 25 mph, with gusts as high as 31 mph.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 8 °F

    Snow Likely
    and Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -7. Blustery.

    Low: -7 °F

    Partly Cloudy
    and Blustery

  • Sunday

    Sunday: Mostly sunny and cold, with a high near 7.

    High: 7 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 0.

    Low: 0 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 15.

    High: 15 °F

    Sunny

Detailed Forecast

Christmas Day
Snow likely, mainly between 4pm and 5pm. Mostly cloudy, with a steady temperature around 22. South wind around 17 mph, with gusts as high as 25 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 16. Wind chill values as low as -1. Breezy, with a southwest wind 21 to 29 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.
Friday
Snow. The snow could be heavy at times. Temperature falling to around 11 by 5pm. Wind chill values as low as -7. Windy, with a west southwest wind 22 to 31 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 7. Wind chill values as low as -12. Breezy, with a west southwest wind 20 to 25 mph, with gusts as high as 32 mph. New snow accumulation of around an inch possible.
Saturday
Snow likely. Mostly cloudy and cold, with a high near 8. Breezy, with a west wind 18 to 25 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
Partly cloudy, with a low around -7. Blustery.
Sunday
Mostly sunny and cold, with a high near 7.
Sunday Night
Mostly clear, with a low around 0.
Monday
Sunny, with a high near 15.
Monday Night
Partly cloudy, with a low around 9.
Tuesday
Partly sunny, with a high near 22.
Tuesday Night
Partly cloudy, with a low around 16.
Wednesday
Sunny, with a high near 24.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles N Mackay ID
 44.05°N 113.62°W (Elev. 11401 ft)
10:31 am MST Dec 25, 2025
2pm 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