Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Northeast; Heavy Rain Returns to California

An Alberta clipper will bring lake effect snow downwind of the Great Lakes, with the highest snow totals downwind of Lakes Erie and Ontario. Snow squalls may impact New Year's Eve travel during the evening and overnight hours across parts of the Great Lakes, Ohio Valley, and Northeast. Heavy rain will bring a flash flooding threat for southern California on 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.

Overcast

21°F

-6°C

Humidity	79%
Wind Speed	N 0 MPH
Barometer	30.35 in (1027.77 mb)
Dewpoint	16°F (-9°C)
Visibility	10.00 mi
Last update	30 Dec 07:55 PM PST

More Information:

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

Extended Forecast for

4 Miles E 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

Tonight
Low: 18 °F
Mostly Cloudy
Wednesday
High: 41 °F
Chance
Rain/Snow
then
Rain/Snow
Wednesday Night
Low: 29 °F
Rain/Snow
New Year's Day
High: 44 °F
Rain
Thursday Night
Low: 27 °F
Chance
Rain/Snow
Friday
High: 43 °F
Chance
Rain/Snow
Friday Night
Low: 26 °F
Rain/Snow
Likely then
Snow Likely
Saturday
High: 40 °F
Snow
Saturday Night
Low: 21 °F
Snow Likely

Detailed Forecast

Tonight

Mostly cloudy, with a low around 18. Calm wind.

Wednesday

A slight chance of snow before 10am, then rain and snow. Snow level rising to 8000 feet in the afternoon. High near 41. Calm wind becoming northeast around 5 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Wednesday Night

Rain and snow before 3am, then snow between 3am and 4am, then snow, possibly mixed with rain after 4am. Snow level 8400 feet. Low around 29. Calm wind. Chance of precipitation is 90%. Little or no snow accumulation expected.

New Year's Day

Rain, mainly before 4pm. Snow level 8700 feet. High near 44. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 90%.

Thursday Night

A chance of rain and snow, mainly before 10pm. Snow level 8300 feet. Mostly cloudy, with a low around 27. Southwest wind around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

Friday

A chance of rain and snow after 10am. Snow level 7600 feet. Partly sunny, with a high near 43. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

Friday Night

A chance of rain and snow before 7pm, then snow likely. Mostly cloudy, with a low around 26. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

Saturday

Snow. Mostly cloudy, with a high near 40.

Saturday Night

Snow likely. Mostly cloudy, with a low around 21.

Sunday

Snow likely. Mostly cloudy, with a high near 39.

Sunday Night

A chance of snow. Mostly cloudy, with a low around 18.

Monday

A chance of snow. Partly sunny, with a high near 38.

Monday Night

A chance of snow. Mostly cloudy, with a low around 20.