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

28°F

-2°C

Humidity 86%
Wind Speed N 0 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 24 Dec 09:20 AM MST
Extended Forecast for

Challis ID

  • Today

    Today: Rain likely, mainly after 3pm. Increasing clouds, with a high near 46. South southwest wind 6 to 8 mph becoming east southeast in the morning. Chance of precipitation is 60%.

    High: 46 °F

    Mostly Sunny
    then Rain
    Likely

  • Tonight

    Tonight: Rain, mainly before 2am. Patchy fog between 11pm and 5am. Low around 32. South southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 32 °F

    Rain and
    Patchy Fog

  • Christmas Day

    Christmas Day: A 50 percent chance of rain. Patchy fog between 9am and 11am. Otherwise, partly sunny, with a high near 45. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 45 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: A chance of rain before 11pm, then a chance of rain and snow between 11pm and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 28. South wind 6 to 8 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Snow likely, mainly before 11am. Partly sunny, with a high near 40. 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 33.

    High: 33 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

Detailed Forecast

Today
Rain likely, mainly after 3pm. Increasing clouds, with a high near 46. South southwest wind 6 to 8 mph becoming east southeast in the morning. Chance of precipitation is 60%.
Tonight
Rain, mainly before 2am. Patchy fog between 11pm and 5am. Low around 32. South southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Christmas Day
A 50 percent chance of rain. Patchy fog between 9am and 11am. Otherwise, partly sunny, with a high near 45. Calm wind becoming south 5 to 7 mph in the afternoon.
Thursday Night
A chance of rain before 11pm, then a chance of rain and snow between 11pm and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 28. South wind 6 to 8 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. 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 33.
Saturday Night
Partly cloudy, with a low around 8.
Sunday
Mostly sunny, with a high near 30.
Sunday Night
Mostly clear, with a low around 12.
Monday
Mostly sunny, with a high near 35.
Monday Night
Partly cloudy, with a low around 15.
Tuesday
Mostly sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Challis ID
 44.53°N 114.23°W (Elev. 5184 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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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation