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

16°F

-9°C

Humidity	78%
Wind Speed	N 0 MPH
Barometer	30.33 in (1027.09 mb)
Dewpoint	10°F (-12°C)
Visibility	10.00 mi
Last update	31 Dec 12:55 AM PST

More Information:

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

Extended Forecast for

7 Miles ESE 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: 23 °F
Mostly Cloudy
Wednesday
High: 44 °F
Chance Wintry
Mix then
Drizzle/Snow
Likely
Wednesday Night
Low: 29 °F
Rain/Snow
Likely
New Year's Day
High: 43 °F
Wintry Mix
Likely
Thursday Night
Low: 23 °F
Chance Wintry
Mix
Friday
High: 45 °F
Chance Wintry
Mix
Friday Night
Low: 25 °F
Wintry Mix
Likely then
Snow Likely
Saturday
High: 41 °F
Rain/Snow
Saturday Night
Low: 21 °F
Snow Likely

Detailed Forecast

Overnight

Mostly cloudy, with a low around 23. Calm wind.

Wednesday

A chance of drizzle, snow, and freezing rain between 10am and 11am, then drizzle and snow likely. Snow level 8100 feet. Cloudy, with a high near 44. Calm wind becoming north around 5 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. Little or no snow accumulation expected.

Wednesday Night

Drizzle and snow likely before 10pm, then rain and snow likely between 10pm and 4am, then snow likely after 4am. Snow level 9000 feet. Mostly cloudy, with a low around 29. Calm wind. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

New Year's Day

Rain and snow likely before 4pm, then a chance of drizzle and snow between 4pm and 5pm, then a chance of drizzle, snow, and freezing rain after 5pm. Snow level 8800 feet lowering to 8100 feet in the afternoon . Mostly cloudy, with a high near 43. Calm wind becoming southwest around 5 mph in the morning. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Thursday Night

A chance of drizzle, snow, and freezing rain before 10pm, then a slight chance of snow and freezing rain between 10pm and 4am, then a slight chance of freezing rain after 4am. Snow level 7600 feet. Partly cloudy, with a low around 23. Southwest wind around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

Friday

A chance of drizzle and snow between 10am and 4pm, then a slight chance of drizzle, snow, and freezing rain after 4pm. Snow level 7400 feet. Mostly sunny, with a high near 45. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

Friday Night

A slight chance of drizzle, snow, and freezing rain before 7pm, then snow likely. Mostly cloudy, with a low around 25. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Saturday

Snow before 10am, then rain and snow. Mostly cloudy, with a high near 41.

Saturday Night

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

Sunday

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

Sunday Night

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

Monday

A chance of snow. Partly sunny, with a high near 39.

Monday Night

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