National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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

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
Extended Forecast for

6 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

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

    Low: 19 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of drizzle, snow, and freezing rain between 10am and 11am, then drizzle and snow likely. Snow level 7500 feet rising to 8000 feet in the afternoon. Cloudy, with a high near 42. Calm wind becoming north around 5 mph in the morning. Chance of precipitation is 70%. Little or no ice accumulation expected. Little or no snow accumulation expected.

    High: 42 °F

    Chance Wintry
    Mix then
    Drizzle/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Rain, snow, and freezing rain likely before 1am, then snow likely between 1am and 4am, then snow and freezing rain likely after 4am. Snow level 8900 feet. Cloudy, with a low around 27. Calm wind. Chance of precipitation is 60%. Little or no ice accumulation expected. Little or no snow accumulation expected.

    Low: 27 °F

    Wintry Mix
    Likely

  • New Year's Day

    New Year's Day: Rain, snow, and freezing rain likely before 8am, then rain and snow likely between 8am and 4pm, then a chance of drizzle after 4pm. Snow level 8600 feet lowering to 8100 feet in the afternoon . Mostly cloudy, with a high near 42. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 42 °F

    Wintry Mix
    Likely

  • Thursday Night

    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. Snow level 7600 feet. Partly cloudy, with a low around 21. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 21 °F

    Chance Wintry
    Mix

  • Friday

    Friday: A chance of drizzle, snow, and freezing rain before 1pm, then a chance of drizzle and snow between 1pm and 4pm, then a slight chance of drizzle, snow, and freezing rain after 4pm. Snow level 7400 feet. Mostly sunny, with a high near 43. South wind 5 to 15 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 43 °F

    Chance Wintry
    Mix

  • Friday Night

    Friday Night: A slight chance of drizzle, snow, and freezing rain before 7pm, then snow likely. Mostly cloudy, with a low around 26. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Wintry Mix
    Likely then
    Snow Likely

  • Saturday

    Saturday: Rain and snow before 4pm, then snow, possibly mixed with drizzle and freezing rain. Snow level 7300 feet. Mostly cloudy, with a high near 40.

    High: 40 °F

    Wintry Mix

  • Saturday Night

    Saturday Night: Drizzle, snow, and freezing rain likely, becoming all snow after 7pm. Mostly cloudy, with a low around 23.

    Low: 23 °F

    Wintry Mix
    Likely then
    Snow Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 19. Calm wind.
Wednesday
A chance of drizzle, snow, and freezing rain between 10am and 11am, then drizzle and snow likely. Snow level 7500 feet rising to 8000 feet in the afternoon. Cloudy, with a high near 42. Calm wind becoming north around 5 mph in the morning. Chance of precipitation is 70%. Little or no ice accumulation expected. Little or no snow accumulation expected.
Wednesday Night
Rain, snow, and freezing rain likely before 1am, then snow likely between 1am and 4am, then snow and freezing rain likely after 4am. Snow level 8900 feet. Cloudy, with a low around 27. Calm wind. Chance of precipitation is 60%. Little or no ice accumulation expected. Little or no snow accumulation expected.
New Year's Day
Rain, snow, and freezing rain likely before 8am, then rain and snow likely between 8am and 4pm, then a chance of drizzle after 4pm. Snow level 8600 feet lowering to 8100 feet in the afternoon . Mostly cloudy, with a high near 42. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
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. Snow level 7600 feet. Partly cloudy, with a low around 21. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Friday
A chance of drizzle, snow, and freezing rain before 1pm, then a chance of drizzle and snow between 1pm and 4pm, then a slight chance of drizzle, snow, and freezing rain after 4pm. Snow level 7400 feet. Mostly sunny, with a high near 43. South wind 5 to 15 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 26. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
Rain and snow before 4pm, then snow, possibly mixed with drizzle and freezing rain. Snow level 7300 feet. Mostly cloudy, with a high near 40.
Saturday Night
Drizzle, snow, and freezing rain likely, becoming all snow after 7pm. Mostly cloudy, with a low around 23.
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 38.
Monday Night
A chance of snow. Mostly cloudy, with a low around 16.
Tuesday
A chance of snow. Partly sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Mammoth Lakes CA
 37.63°N 118.85°W (Elev. 7152 ft)
Last Update:
1:09 am PST Dec 31, 2025
Forecast Valid:
1am PST Dec 31, 2025-6pm PST Jan 6, 2026
 
Forecast Discussion
 
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