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.

unknown precip

30°F

-1°C

Humidity	92%
Wind Speed	N 0 MPH
Barometer	30.05 in (1017.61 mb)
Dewpoint	28°F (-2°C)
Visibility	9.00 mi
Last update	01 Jan 02:15 AM 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 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
Overnight
Low: 29 °F
Rain/Snow
New Year's Day
High: 34 °F
Rain/Snow
then Snow
Thursday Night
Low: 21 °F
Slight Chance
Snow and
Breezy then
Partly Cloudy
Friday
High: 35 °F
Sunny
Friday Night
Low: 24 °F
Breezy.
Chance Snow
then Snow
Likely
Saturday
High: 33 °F
Heavy Snow
and Breezy
Saturday Night
Low: 25 °F
Snow Showers
and Breezy
Sunday
High: 28 °F
Heavy Snow
and Breezy

Detailed Forecast

Overnight

Rain and snow. Snow level 9400 feet. Low around 29. Southwest wind around 10 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 1 to 3 inches possible.

New Year's Day

Rain and snow likely before 7am, then snow. The snow could be heavy at times. High near 34. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Thursday Night

A 10 percent chance of snow before 7pm. Partly cloudy, with a low around 21. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

Friday

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

Friday Night

Snow likely, mainly after 4am. Increasing clouds, 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 33. Breezy, with a southwest wind around 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 6 inches possible.

Saturday Night

Snow showers, mainly before 4am, then snow likely after 4am. Some thunder is also possible. Low around 25. Breezy. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

Sunday

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

Sunday Night

Snow. The snow could be heavy at times. Cloudy, with a low around 22. Breezy.

Monday

Snow. Mostly cloudy, with a high near 26. Breezy.

Monday Night

Snow likely. Mostly cloudy, with a low around 17.

Tuesday

A chance of snow. Partly sunny, with a high near 26.

Tuesday Night

A slight chance of snow. Mostly cloudy, with a low around 16.