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.

Clear

36°F

2°C

Humidity 86%
Wind Speed NNW 9 MPH
Barometer 29.75 in (1007.45 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 25 Dec 03:05 AM MST
Extended Forecast for

23 Miles NW Mackay ID

  • Overnight

    Overnight: Rain and snow likely.  Patchy fog after 4am.  Otherwise, cloudy, with a low around 31. South southeast wind around 7 mph.  Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 31 °F

    Rain/Snow
    Likely and
    Patchy Fog

  • Christmas Day

    Christmas Day: A chance of snow before 8am, then a chance of snow after 1pm.  Patchy fog before 10am.  Otherwise, increasing clouds, with a high near 36. South southeast wind 6 to 14 mph, with gusts as high as 18 mph.  Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Chance Snow
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: Snow.  Low around 28. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 28 °F

    Snow

  • Friday

    Friday: Snow, mainly before 11am.  High near 34. Southwest wind 11 to 15 mph, with gusts as high as 23 mph.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 34 °F

    Snow then
    Chance Snow

  • Friday Night

    Friday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 16. Southwest wind 10 to 14 mph, with gusts as high as 18 mph.  New snow accumulation of 1 to 3 inches possible.

    Low: 16 °F

    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow.  Mostly cloudy, with a high near 24. New snow accumulation of less than one inch possible.

    High: 24 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 2.

    Low: 2 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 21.

    High: 21 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 9.

    Low: 9 °F

    Mostly Clear

Detailed Forecast

Overnight
Rain and snow likely. Patchy fog after 4am. Otherwise, cloudy, with a low around 31. South southeast wind around 7 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Christmas Day
A chance of snow before 8am, then a chance of snow after 1pm. Patchy fog before 10am. Otherwise, increasing clouds, with a high near 36. South southeast wind 6 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow. Low around 28. South southwest wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Friday
Snow, mainly before 11am. High near 34. Southwest wind 11 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 16. Southwest wind 10 to 14 mph, with gusts as high as 18 mph. New snow accumulation of 1 to 3 inches possible.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 24. New snow accumulation of less than one inch possible.
Saturday Night
Partly cloudy, with a low around 2.
Sunday
Sunny, with a high near 21.
Sunday Night
Mostly clear, with a low around 9.
Monday
Sunny, with a high near 29.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
Sunny, with a high near 35.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Sunny, with a high near 37.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
23 Miles NW Mackay ID
 44.17°N 113.88°W (Elev. 6821 ft)
10:31 pm MST Dec 24, 2025
3am 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