Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

Lat: 44.523° N Lon: 114.21611° W Elev: 5026.0 ft.

Clear

28°F

-2°C

Humidity 92%
Wind Speed N 0 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 24 Dec 01:20 AM MST
Detailed forecast for

Lost River Range

Tonight
Decreasing clouds. Lows 28 to 35.
Wednesday
Mostly sunny with a chance of snow in the morning... Then snow and rain in the afternoon. Breezy. Snow may be heavy at times. Snow accumulation of 4 to 8 inches. Snow level 7500 feet. Highs 36 to 45.
Wednesday Night
Snow and rain. Snow may be heavy at times in the evening. Snow accumulation of 8 to 11 inches. Snow level 7900 feet. Lows 31 to 38.
Christmas Day
Snow likely and rain. Highs 37 to 47.
Thursday Night
Snow, colder. Lows 26 to 34.
Friday
Snow likely. Accumulations possible. Highs 33 to 41.
Friday Night
Mostly cloudy with a slight chance of snow. Lows 12 to 21.
Saturday Through Sunday
Partly cloudy. Highs 23 to 33. Lows 8 to 16.
Sunday Night
Mostly clear. Lows 13 to 20.
Monday And Monday Night
Partly cloudy. Highs 27 to 34. Lows 17 to 24.
Tuesday
Partly sunny. Highs 30 to 38.



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908 PM MST Tue Dec 23 2025
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database