Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Current conditions at

DW5868 Mammoth Lakes (D5868)

Lat: 37.625°NLon: 118.98°WElev: 7973.0ft.

NA

42°F

6°C

Humidity 24%
Wind Speed ENE 0 MPH
Barometer 30.48 in (1032.17 mb)
Dewpoint 8°F (-13°C)
Visibility NA
Last update 30 Dec 11:45 AM PST
Extended Forecast for

2 Miles SSW Mammoth Lakes CA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 34. South wind around 5 mph becoming northeast.

    High: 34 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 21. Southwest wind around 5 mph becoming calm.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Snow likely before 1pm, then rain and snow.  High near 33. Calm wind becoming north around 5 mph.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Snow Likely
    then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain and snow.  Snow level 9200 feet. Low around 32. Southwest wind around 5 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 32 °F

    Rain/Snow

  • New Year's Day

    New Year's Day: Rain and snow, becoming all snow after 7am.  High near 34. Southwest wind around 10 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 34 °F

    Rain/Snow
    then Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow, mainly before 4am.  Mostly cloudy, with a low around 28. Southwest wind around 15 mph, with gusts as high as 30 mph.  New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance Snow

  • Friday

    Friday: A 50 percent chance of snow, mainly after 10am.  Partly sunny, with a high near 33. New snow accumulation of 1 to 3 inches possible.

    High: 33 °F

    Chance Snow

  • Friday Night

    Friday Night: Snow. The snow could be heavy at times.  Mostly cloudy, with a low around 26. Breezy.

    Low: 26 °F

    Heavy Snow
    and Breezy

  • Saturday

    Saturday: Snow.  Mostly cloudy, with a high near 29. Breezy.

    High: 29 °F

    Snow and
    Breezy

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 34. South wind around 5 mph becoming northeast.
Tonight
Mostly cloudy, with a low around 21. Southwest wind around 5 mph becoming calm.
Wednesday
Snow likely before 1pm, then rain and snow. High near 33. Calm wind becoming north around 5 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday Night
Rain and snow. Snow level 9200 feet. Low around 32. Southwest wind around 5 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
New Year's Day
Rain and snow, becoming all snow after 7am. High near 34. Southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Thursday Night
A 40 percent chance of snow, mainly before 4am. Mostly cloudy, with a low around 28. Southwest wind around 15 mph, with gusts as high as 30 mph. New snow accumulation of less than a half inch possible.
Friday
A 50 percent chance of snow, mainly after 10am. Partly sunny, with a high near 33. New snow accumulation of 1 to 3 inches possible.
Friday Night
Snow. The snow could be heavy at times. Mostly cloudy, with a low around 26. Breezy.
Saturday
Snow. Mostly cloudy, with a high near 29. Breezy.
Saturday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 20.
Sunday
A chance of snow. Partly sunny, with a high near 30.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 18.
Monday
A chance of snow. Partly sunny, with a high near 32.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Mammoth Lakes CA
 37.61°N 118.99°W (Elev. 9137 ft)
11:38 am PST Dec 30, 2025
12pm PST Dec 30, 2025-6pm PST Jan 5, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database