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 >

Hazardous Weather Conditions

Current conditions at

DW5868 Mammoth Lakes (D5868)

Lat: 37.625°NLon: 118.98°WElev: 7973.0ft.

29°F

-2°C

Humidity	94%
Wind Speed	NE 0 MPH
Barometer	29.89 in (1012.19 mb)
Dewpoint	27°F (-3°C)
Visibility	NA
Last update	25 Dec 09:45 AM PST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Mammoth Lakes CA

Winter Storm Warning December 25, 10:09am until December 26, 10:00am

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning December 25, 10:09am until December 26, 10:00am
NOW until 10:00am Fri
Winter Storm Warning
Christmas Day
High: 35 °F
Heavy Snow
and Breezy
Tonight
Low: 27 °F
Heavy Snow
and Breezy
Friday
High: 35 °F
Heavy Snow
and Breezy
Friday Night
Low: 13 °F
Chance Snow
then Slight
Chance Snow
Saturday
High: 35 °F
Slight Chance
Snow
Saturday Night
Low: 10 °F
Mostly Clear
Sunday
High: 39 °F
Sunny
Sunday Night
Low: 17 °F
Mostly Clear

Detailed Forecast

Christmas Day

Snow. The snow could be heavy at times. High near 35. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 10 to 16 inches possible.

Tonight

Snow showers before 10pm, then snow after 10pm. The snow could be heavy at times. Some thunder is also possible. Low around 27. Breezy, with a south wind 20 to 25 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 9 to 13 inches possible.

Friday

Snow, mainly before 4pm. The snow could be heavy at times. High near 35. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

Friday Night

A 50 percent chance of snow, mainly before 10pm. Mostly cloudy, with a low around 13. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.

Saturday

A 20 percent chance of snow. Mostly sunny, with a high near 35. Calm wind.

Saturday Night

Mostly clear, with a low around 10. West wind around 5 mph, with gusts as high as 20 mph.

Sunday

Sunny, with a high near 39.

Sunday Night

Mostly clear, with a low around 17.

Monday

Sunny, with a high near 44.

Monday Night

Mostly clear, with a low around 23.