National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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

29°F

-2°C

Humidity 88%
Wind Speed N 0 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 24 Dec 08:55 AM MST
Extended Forecast for

Challis ID

  • Today

    Today: Rain likely, mainly after 3pm. Increasing clouds, with a high near 47. South southeast wind around 7 mph. Chance of precipitation is 60%.

    High: 47 °F

    Mostly Sunny
    then Rain
    Likely

  • Tonight

    Tonight: Rain, mainly before 2am. Patchy fog between midnight and 2am. Low around 34. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%.

    Low: 34 °F

    Rain and
    Patchy Fog

  • Christmas Day

    Christmas Day: A 50 percent chance of rain. Patchy fog between 10am and 11am. Otherwise, partly sunny, with a high near 47. Calm wind becoming south around 6 mph in the afternoon.

    High: 47 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: A chance of rain before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 29. South wind around 7 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Snow likely, mainly before 11am. Partly sunny, with a high near 40. South southwest wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Snow Likely
    then Chance
    Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

Detailed Forecast

Today
Rain likely, mainly after 3pm. Increasing clouds, with a high near 47. South southeast wind around 7 mph. Chance of precipitation is 60%.
Tonight
Rain, mainly before 2am. Patchy fog between midnight and 2am. Low around 34. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%.
Christmas Day
A 50 percent chance of rain. Patchy fog between 10am and 11am. Otherwise, partly sunny, with a high near 47. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
A chance of rain before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 29. South wind around 7 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday
Snow likely, mainly before 11am. Partly sunny, with a high near 40. South southwest wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Friday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 20.
Saturday
Mostly sunny, with a high near 32.
Saturday Night
Partly cloudy, with a low around 9.
Sunday
Mostly sunny, with a high near 32.
Sunday Night
Mostly clear, with a low around 13.
Monday
Mostly sunny, with a high near 37.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Mostly sunny, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Challis ID
 44.51°N 114.22°W (Elev. 5151 ft)
Last Update:
4:31 am MST Dec 24, 2025
Forecast Valid:
9am MST Dec 24, 2025-6pm MST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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