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.

Overcast

32°F

0°C

Humidity	74%
Wind Speed	N 0 MPH
Barometer	30.19 in (1022.35 mb)
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Last update	31 Dec 02:15 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 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: 43 °F
Rain Likely
Tonight
Low: 32 °F
Rain/Snow
New Year's Day
High: 40 °F
Rain/Snow
Thursday Night
Low: 23 °F
Chance Snow
then Partly
Cloudy
Friday
High: 44 °F
Mostly Sunny
Friday Night
Low: 27 °F
Chance Snow
then Snow
Likely
Saturday
High: 41 °F
Snow then
Rain/Snow
Saturday Night
Low: 25 °F
Snow
Sunday
High: 38 °F
Snow

Detailed Forecast

This Afternoon

Rain likely. Snow level 9000 feet. Cloudy, with a high near 43. Northeast wind around 5 mph. Chance of precipitation is 70%.

Tonight

Rain and snow, mainly before 4am. Snow level 8500 feet. Low around 32. Calm wind becoming east around 5 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

New Year's Day

Rain and snow, becoming all snow after 1pm. Snow level 8300 feet lowering to 7700 feet in the afternoon . High near 40. East wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Thursday Night

A 30 percent chance of snow before 10pm. Partly cloudy, with a low around 23. Southwest wind 5 to 10 mph. Little or no snow accumulation expected.

Friday

Mostly sunny, with a high near 44. South wind around 5 mph.

Friday Night

Snow likely, mainly after 4am. Mostly cloudy, with a low around 27. South wind around 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Saturday

Snow before 1pm, then rain and snow. High near 41. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

Saturday Night

Snow. Cloudy, with a low around 25.

Sunday

Snow. Cloudy, with a high near 38.

Sunday Night

Snow. Mostly cloudy, with a low around 23.

Monday

Snow likely. Mostly cloudy, with a high near 37.

Monday Night

Snow likely. Mostly cloudy, with a low around 20.