Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

Winter Storm Warning in effect from January 3, 12:00 AM PST until January 5, 10:00 AM PST

Current conditions at

Mammoth Yosemite Airport (KMMH)

Lat: 37.6241°NLon: 118.8423°WElev: 7112.0ft.

Partly Cloudy

36°F

2°C

Humidity	64%
Wind Speed	NNW 3 MPH
Barometer	30.01 in (1016.26 mb)
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Last update	01 Jan 01:15 PM PST

More Information:

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

Extended Forecast for

5 Miles ENE Mammoth Lakes CA

Winter Storm Warning January 3, 12:00am until January 5, 10:00am

Click here for hazard details and duration

Winter Storm Warning

New Year's Day
High: 40 °F
Chance Snow
Tonight
Low: 21 °F
Partly Cloudy
Friday
High: 42 °F
Sunny
Friday Night
Low: 26 °F
Chance Snow
then Snow
Likely
Saturday
High: 40 °F
Rain/Snow
Saturday Night
Low: 27 °F
Snow Likely
Sunday
High: 37 °F
Heavy Snow
Sunday Night
Low: 20 °F
Snow
Monday
High: 35 °F
Snow Likely

Detailed Forecast

New Year's Day

A 30 percent chance of snow. Mostly sunny, with a high near 40. Southwest wind around 10 mph, with gusts as high as 20 mph. Total daytime snow accumulation of less than one inch possible.

Tonight

Partly cloudy, with a low around 21. West wind 5 to 10 mph.

Friday

Sunny, with a high near 42. Calm wind becoming northeast around 5 mph in the morning.

Friday Night

Snow likely, mainly after 4am. Increasing clouds, with a low around 26. South wind around 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Saturday

Snow likely before 10am, then rain and snow between 10am and 1pm, then snow after 1pm. High near 40. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

Saturday Night

Snow likely. Mostly cloudy, with a low around 27. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

Sunday

Snow. The snow could be heavy at times. High near 37. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

Sunday Night

Snow, mainly before 4am. Mostly cloudy, with a low around 20.

Monday

Snow likely, mainly after 10am. Mostly cloudy, with a high near 35.

Monday Night

A chance of snow. Mostly cloudy, with a low around 17.

Tuesday

A chance of snow. Partly sunny, with a high near 36.

Tuesday Night

A slight chance of snow. Partly cloudy, with a low around 17.