Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Hazardous Weather Conditions

Current conditions at

Mammoth Yosemite Airport (KMMH)

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

Partly Cloudy

34°F

1°C

Humidity	74%
Wind Speed	N 0 MPH
Barometer	30.17 in (1021.67 mb)
Dewpoint	26°F (-3°C)
Visibility	10.00 mi
Last update	31 Dec 02:55 PM PST

More Information:

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

Extended Forecast for

10 Miles SE Mammoth Lakes CA

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

Winter Weather Advisory December 31, 04:00pm until January 1, 12:00pm

Click here for hazard details and duration

Winter Storm Watch

Winter Weather Advisory

This Afternoon
High: 38 °F
Rain/Snow
Likely
Tonight
Low: 31 °F
Rain/Snow
New Year's Day
High: 34 °F
Rain/Snow
then Snow
Thursday Night
Low: 22 °F
Chance Snow
then Partly
Cloudy
Friday
High: 35 °F
Mostly Sunny
Friday Night
Low: 24 °F
Breezy.
Chance Snow
then Snow
Likely
Saturday
High: 32 °F
Heavy Snow
and Breezy
Saturday Night
Low: 25 °F
Heavy Snow
and Breezy
Sunday
High: 28 °F
Heavy Snow
and Breezy

Detailed Forecast

This Afternoon

Rain and snow likely. Snow level 10200 feet. Cloudy, with a high near 38. Southeast wind around 5 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Tonight

Rain and snow, mainly before 4am. Snow level 9400 feet. Low around 31. Southwest wind 5 to 10 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

New Year's Day

A chance of rain and snow before 7am, then snow. High near 34. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Thursday Night

A 30 percent chance of snow before 10pm. Partly cloudy, with a low around 22. Southwest wind around 15 mph, with gusts as high as 30 mph. Little or no snow accumulation expected.

Friday

Mostly sunny, with a high near 35. Southwest wind 10 to 15 mph.

Friday Night

Snow likely, mainly after 4am. Mostly cloudy, with a low around 24. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Saturday

Snow. The snow could be heavy at times. High near 32. Breezy. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Saturday Night

Snow. The snow could be heavy at times. Cloudy, with a low around 25. Breezy.

Sunday

Snow. The snow could be heavy at times. Cloudy, with a high near 28. Breezy.

Sunday Night

Snow before 10pm, then snow showers after 10pm. The snow could be heavy at times. Some thunder is also possible. Mostly cloudy, with a low around 21. Breezy.

Monday

Snow likely. The snow could be heavy at times. Mostly cloudy, with a high near 27.

Monday Night

Snow likely. Mostly cloudy, with a low around 19.

Tuesday

A chance of snow. Partly sunny, with a high near 28.