Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. Read More >

Current conditions at

Mammoth Yosemite Airport (KMMH)

Lat: 37.6241°NLon: 118.8423°WElev: 7112.0ft.

Clear

7°F

-14°C

Humidity 77%
Wind Speed W 3 MPH
Barometer 30.49 in (1032.51 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Last update 29 Dec 10:35 PM PST
Extended Forecast for

8 Miles ENE Mammoth Lakes CA

  • Tonight

    Tonight: Mostly clear, with a low around 18. West wind around 5 mph becoming calm  after midnight.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 46. Calm wind becoming north around 5 mph.

    High: 46 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow between 4am and 5am, then a slight chance of snow after 5am.  Mostly cloudy, with a low around 25. Calm wind.  Chance of precipitation is 10%.

    Low: 25 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A slight chance of snow before 7am, then a slight chance of rain and snow between 7am and 10am, then rain likely after 10am.  Snow level 7500 feet rising to 9400 feet in the afternoon. Mostly cloudy, with a high near 47. Calm wind.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 47 °F

    Chance
    Rain/Snow
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Rain.  Snow level 9600 feet. Low around 30. Calm wind.  Chance of precipitation is 80%.

    Low: 30 °F

    Rain

  • New Year's Day

    New Year's Day: Rain.  Snow level 9100 feet lowering to 8500 feet in the afternoon . High near 45. Calm wind becoming south around 5 mph in the morning.  Chance of precipitation is 90%.

    High: 45 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain and snow before 10pm, then a chance of rain between 10pm and 1am, then a chance of rain and snow after 1am.  Snow level 8100 feet. Mostly cloudy, with a low around 26. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 26 °F

    Chance
    Rain/Snow

  • Friday

    Friday: A chance of rain and snow before 1pm, then a chance of rain between 1pm and 4pm, then a chance of rain and snow after 4pm.  Snow level 7600 feet. Partly sunny, with a high near 45.

    High: 45 °F

    Chance
    Rain/Snow

  • Friday Night

    Friday Night: Rain and snow likely, becoming all snow after 1am.  Snow level 7200 feet. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Rain/Snow
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 18. West wind around 5 mph becoming calm after midnight.
Tuesday
Increasing clouds, with a high near 46. Calm wind becoming north around 5 mph.
Tuesday Night
A slight chance of rain and snow between 4am and 5am, then a slight chance of snow after 5am. Mostly cloudy, with a low around 25. Calm wind. Chance of precipitation is 10%.
Wednesday
A slight chance of snow before 7am, then a slight chance of rain and snow between 7am and 10am, then rain likely after 10am. Snow level 7500 feet rising to 9400 feet in the afternoon. Mostly cloudy, with a high near 47. Calm wind. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday Night
Rain. Snow level 9600 feet. Low around 30. Calm wind. Chance of precipitation is 80%.
New Year's Day
Rain. Snow level 9100 feet lowering to 8500 feet in the afternoon . High near 45. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 90%.
Thursday Night
A chance of rain and snow before 10pm, then a chance of rain between 10pm and 1am, then a chance of rain and snow after 1am. Snow level 8100 feet. Mostly cloudy, with a low around 26. Chance of precipitation is 50%. Little or no snow accumulation expected.
Friday
A chance of rain and snow before 1pm, then a chance of rain between 1pm and 4pm, then a chance of rain and snow after 4pm. Snow level 7600 feet. Partly sunny, with a high near 45.
Friday Night
Rain and snow likely, becoming all snow after 1am. Snow level 7200 feet. Mostly cloudy, with a low around 25.
Saturday
Snow likely. Mostly cloudy, with a high near 42.
Saturday Night
Snow likely. Mostly cloudy, with a low around 20.
Sunday
A chance of snow. Partly sunny, with a high near 41.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 18.
Monday
A chance of snow. Partly sunny, with a high near 41.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles ENE Mammoth Lakes CA
 37.68°N 118.83°W (Elev. 7047 ft)
9:15 pm PST Dec 29, 2025
10pm PST Dec 29, 2025-6pm PST Jan 5, 2026
 
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Additional Resources

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