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.

Partly Cloudy

18°F

-8°C

Humidity	78%
Wind Speed	N 0 MPH
Barometer	30.33 in (1027.09 mb)
Dewpoint	12°F (-11°C)
Visibility	10.00 mi
Last update	31 Dec 12:35 AM PST

More Information:

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

Extended Forecast for

6 Miles ENE 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

Overnight
Low: 19 °F
Mostly Cloudy
Wednesday
High: 40 °F
Chance Snow
then
Rain/Snow
Wednesday Night
Low: 30 °F
Rain/Snow
New Year's Day
High: 43 °F
Rain then
Rain/Snow
Thursday Night
Low: 27 °F
Chance
Rain/Snow
Friday
High: 43 °F
Chance Snow
then Chance
Rain/Snow
Friday Night
Low: 27 °F
Rain/Snow
Likely then
Snow Likely
Saturday
High: 39 °F
Snow
Saturday Night
Low: 21 °F
Snow Likely

Detailed Forecast

Overnight

Mostly cloudy, with a low around 19. Calm wind.

Wednesday

A chance of snow before 1pm, then rain and snow. High near 40. Calm wind becoming east around 5 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Wednesday Night

Snow, possibly mixed with rain. Snow level 8200 feet. Low around 30. Calm wind. Chance of precipitation is 90%. Little or no snow accumulation expected.

New Year's Day

Rain before 4pm, then a chance of rain and snow. Snow level 8600 feet. High near 43. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night

A chance of rain and snow before 4am, then a slight chance of rain. 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 snow after 10am, mixing with rain after 1pm. 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 27. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

Saturday

Snow. Mostly cloudy, with a high near 39.

Saturday Night

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

Sunday

Snow likely. Mostly cloudy, with a high near 38.

Sunday Night

A chance of snow. Mostly cloudy, with a low around 19.

Monday

A chance of snow. Partly sunny, with a high near 37.

Monday Night

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