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 >

Hazardous Weather Conditions

Winter Storm Watch in effect from January 2, 04:00 PM PST until January 4, 10:00 AM PST

Current conditions at

Mammoth Yosemite Airport (KMMH)

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

Partly Cloudy

23°F

-5°C

Humidity	85%
Wind Speed	N 0 MPH
Barometer	30.29 in (1025.74 mb)
Dewpoint	19°F (-7°C)
Visibility	10.00 mi
Last update	31 Dec 07:55 AM PST

More Information:

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

Extended Forecast for

9 Miles SE Mammoth Lakes CA

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

Click here for hazard details and duration

Winter Storm Watch

Today
High: 32 °F
Chance Snow
then Snow
Tonight
Low: 26 °F
Heavy Snow
and Breezy
New Year's Day
High: 30 °F
Heavy Snow
and Breezy
Thursday Night
Low: 18 °F
Chance Snow
and Windy
Friday
High: 30 °F
Chance Snow
and Breezy
Friday Night
Low: 19 °F
Snow Likely
and Very
Windy
Saturday
High: 25 °F
Heavy Snow
and Windy
Saturday Night
Low: 16 °F
Heavy Snow
and Windy
Sunday
High: 23 °F
Heavy Snow
and Windy

Detailed Forecast

Today

Snow, mainly after 10am. High near 32. South wind 5 to 10 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than one inch possible.

Tonight

Snow. The snow could be heavy at times. Low around 26. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

New Year's Day

Snow, mainly before 4pm. The snow could be heavy at times. High near 30. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 7 inches possible.

Thursday Night

A 40 percent chance of snow, mainly before 10pm. Partly cloudy, with a low around 18. Windy, with a southwest wind 20 to 30 mph, with gusts as high as 45 mph. New snow accumulation of less than a half inch possible.

Friday

A 30 percent chance of snow after 10am. Mostly sunny, with a high near 30. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph. Little or no snow accumulation expected.

Friday Night

Snow likely, mainly after 10pm. Mostly cloudy, with a low around 19. Very windy, with a south wind 30 to 40 mph, with gusts as high as 55 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

Saturday

Snow. The snow could be heavy at times. High near 25. Windy. Chance of precipitation is 90%. New snow accumulation of 7 to 11 inches possible.

Saturday Night

Snow. The snow could be heavy at times. Mostly cloudy, with a low around 16. Windy.

Sunday

Snow, mainly before 4pm, then snow showers likely after 4pm. The snow could be heavy at times. Some thunder is also possible. Mostly cloudy, with a high near 23. Windy.

Sunday Night

Snow showers likely before 10pm, then a chance of snow after 10pm. The snow could be heavy at times. Some thunder is also possible. Mostly cloudy, with a low around 14. Windy.

Monday

Snow likely. The snow could be heavy at times. Mostly cloudy, with a high near 23. Windy.

Monday Night

A chance of snow. Mostly cloudy, with a low around 11. Windy.

Tuesday

A chance of snow. Partly sunny, with a high near 24. Breezy.