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.

Mostly Cloudy

33°F

1°C

Humidity 91%
Wind Speed WNW 5 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 26 Dec 02:55 AM MST
Extended Forecast for

Challis ID

  • Overnight

    Overnight: A chance of rain and snow, mainly after 5am. Partly cloudy, with a steady temperature around 33. South wind around 7 mph. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 33 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Rain and snow before 10am, then a chance of snow between 10am and 1pm. High near 41. South wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: A 40 percent chance of snow after 11pm. Partly cloudy, with a low around 18. South wind around 10 mph, with gusts as high as 21 mph. New snow accumulation of less than a half inch possible.

    Low: 18 °F

    Chance Snow

  • Saturday

    Saturday: A 50 percent chance of snow. Partly sunny, with a high near 29. South southwest wind around 10 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph. New snow accumulation of less than a half inch possible.

    High: 29 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 2. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 2 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 22.

    High: 22 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 4.

    Low: 4 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 30.

    High: 30 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13.

    Low: 13 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of rain and snow, mainly after 5am. Partly cloudy, with a steady temperature around 33. South wind around 7 mph. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.
Friday
Rain and snow before 10am, then a chance of snow between 10am and 1pm. High near 41. South wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday Night
A 40 percent chance of snow after 11pm. Partly cloudy, with a low around 18. South wind around 10 mph, with gusts as high as 21 mph. New snow accumulation of less than a half inch possible.
Saturday
A 50 percent chance of snow. Partly sunny, with a high near 29. South southwest wind around 10 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly clear, with a low around 2. Northwest wind 5 to 7 mph becoming calm in the evening.
Sunday
Sunny, with a high near 22.
Sunday Night
Mostly clear, with a low around 4.
Monday
Sunny, with a high near 30.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Partly sunny, with a high near 37.
Tuesday Night
Partly cloudy, with a low around 17.
Wednesday
Mostly sunny, with a high near 41.
Wednesday Night
Mostly cloudy, with a low around 20.
New Year's Day
Partly sunny, with a high near 41.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Challis ID
 44.53°N 114.23°W (Elev. 5184 ft)
Last Update:
2:53 am MST Dec 26, 2025
Forecast Valid:
3am MST Dec 26, 2025-6pm MST Jan 1, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation