Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain Returns to California

Lake effect snow will continue through Friday bringing significant snowfall to areas east to southeast of the Great Lakes. Snow squalls may impact New Year's Eve travel this evening and overnight across parts of the Great Lakes, Ohio Valley, Mid-Atlantic, and Upstate New York. Heavy rain will bring another flash flooding threat for southern California New Year's Eve into New Year's Day. Read More >

Current conditions at

DEVILS POST PILE RAWS NEAR MAMMOTH LAKES 6WSW DPO (DPPC1)

Lat: 37.63° N Lon: 119.09333° W Elev: 8024.0 ft.

NA

38°F

3°C

Humidity 80%
Wind Speed W 0 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 31 Dec 10:00 AM PST
Detailed forecast for

Upper San Joaquin River

Today
Slight chance of rain and snow early in the morning, then rain and snow in the late morning and afternoon. Snow accumulation up to 1 inch. Snow level above 8000 feet. Highs 35 to 47. East winds up to 10 mph shifting to the southeast in the afternoon. Gusts up to 25 mph. Chance of precipitation near 100 percent.
Tonight
Rain and snow. Snow accumulation up to 7 inches. Snow level above 8000 feet. Near steady temperature in the mid 30s. South winds up to 10 mph with gusts to around 35 mph. Chance of precipitation near 100 percent.
New Years Day
Rain and snow in the morning, then rain and chance of snow in the afternoon. Snow accumulation up to 12 inches. Total snow accumulation up to 20 inches. Snow level above 8000 feet. Highs 31 to 41. South winds 5 to 15 mph with gusts to around 30 mph. Chance of precipitation near 100 percent.
Thursday Night
Colder. Mostly cloudy with a 50 percent chance of snow in the evening, then partly cloudy after midnight. Near steady temperature in the mid 20s. South winds 5 to 10 mph shifting to the southeast after midnight. Gusts up to 30 mph.
Friday
Mostly sunny. Highs 32 to 46. South winds up to 10 mph with gusts to around 25 mph.
Friday Night
Mostly cloudy. Chance of snow in the evening, then chance of snow and rain after midnight. Near steady temperature in the upper 20s. Chance of precipitation 50 percent.
Saturday
Snow likely and rain in the morning, then snow showers and rain in the afternoon. Snow may be heavy at times. Heavy snow accumulations. Near steady temperature in the lower 30s. Chance of precipitation 90 percent.
Saturday Night And Sunday
Snow showers and rain showers. Snow may be heavy at times. Heavy snow accumulations. Near steady temperature in the upper 20s. Chance of precipitation 90 percent.
Sunday Night
Snow showers in the evening, then snow showers likely after midnight. Snow may be heavy at times. Heavy snow accumulations. Near steady temperature in the upper 20s. Chance of snow 90 percent.
Monday And Monday Night
Snow showers likely. Snow may be heavy at times. Heavy snow accumulations. Highs 22 to 36. Lows 16 to 28. Chance of snow 70 percent.
Tuesday
Partly sunny with a 50 percent chance of snow. Highs 25 to 39.



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1101 AM PST Wed Dec 31 2025
 
 

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