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

Current conditions at

Mammoth Yosemite Airport (KMMH)

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

snow,fog

32°F

0°C

Humidity	100%
Wind Speed	N 0 MPH
Barometer	30.06 in (1017.95 mb)
Dewpoint	32°F (0°C)
Visibility	0.25 mi
Last update	01 Jan 10:55 AM PST

More Information:

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

Extended Forecast for

5 Miles ESE Mammoth Lakes CA

Winter Storm Watch January 2, 04:00pm until January 4, 10:00am

Winter Weather Advisory until January 1, 12:00pm

Click here for hazard details and duration

Winter Storm Watch

Winter Weather Advisory

Winter Weather Advisory until January 1, 12:00pm
NOW until 12:00pm Thu
Winter Weather Advisory
New Year's Day
High: 32 °F
Heavy Snow
and Windy
Tonight
Low: 20 °F
Breezy.
Slight Chance
Snow then
Partly Cloudy
Friday
High: 33 °F
Mostly Sunny
then Mostly
Sunny and
Breezy
Friday Night
Low: 22 °F
Very Windy.
Chance Snow
then Snow
Likely
Saturday
High: 29 °F
Heavy Snow
and Very
Windy
Saturday Night
Low: 23 °F
Heavy Snow
and Very
Windy
Sunday
High: 26 °F
Heavy Snow
and Very
Windy
Sunday Night
Low: 20 °F
Heavy Snow
and Very
Windy

Detailed Forecast

New Year's Day

Snow, mainly before 1pm. The snow could be heavy at times. High near 32. Windy, with a southwest wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 4 to 8 inches possible.

Tonight

A 20 percent chance of snow before 10pm. Partly cloudy, with a low around 20. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 40 mph.

Friday

Mostly sunny, with a high near 33. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.

Friday Night

Snow likely, mainly after 4am. Mostly cloudy, with a low around 22. Very windy, with a southwest wind 35 to 40 mph, with gusts as high as 65 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Saturday

Snow. The snow could be heavy at times. High near 29. Very windy, with a southwest wind around 45 mph, with gusts as high as 65 mph. Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.

Saturday Night

Snow showers, mainly before 4am, then snow likely after 4am. The snow could be heavy at times. Some thunder is also possible. Low around 23. Very windy, with a southwest wind 35 to 45 mph, with gusts as high as 65 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 7 inches possible.

Sunday

Snow. The snow could be heavy at times. High near 26. Very windy. Chance of precipitation is 90%. New snow accumulation of 9 to 13 inches possible.

Sunday Night

Snow. The snow could be heavy at times. Cloudy, with a low around 20. Very windy.

Monday

Snow. The snow could be heavy at times. Mostly cloudy, with a high near 24. Very windy.

Monday Night

Snow likely. Mostly cloudy, with a low around 15. Windy.

Tuesday

A chance of snow. Partly sunny, with a high near 25.

Tuesday Night

A slight chance of snow. Mostly cloudy, with a low around 14.