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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

DW5868 Mammoth Lakes (D5868)

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

NA

N/A

Humidity NA
Wind Speed NA NA MPH
Barometer 29.69 in (1005.42 mb)
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

Mammoth Lakes CA

Winter Storm Warning until December 26, 10:00am
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning until December 26, 10:00am

    NOW until 10:00am Fri

    Winter Storm Warning

  • Today

    High: 38 °F

    Heavy Snow
    and Breezy

  • Tonight

    Tonight: Snow. The snow could be heavy at times. Low around 26. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.

    Low: 26 °F

    Heavy Snow
    and Breezy

  • Christmas Day

    Christmas Day: Snow. The snow could be heavy at times. High near 34. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.

    High: 34 °F

    Heavy Snow
    and Breezy

  • Thursday Night

    Thursday Night: Snow before 10pm, then snow showers between 10pm and 4am, then snow after 4am. The snow could be heavy at times. Some thunder is also possible. Low around 25. Breezy, with a south wind around 25 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 9 to 13 inches possible.

    Low: 25 °F

    Heavy Snow
    and Breezy

  • Friday

    Friday: Snow. The snow could be heavy at times. High near 32. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    High: 32 °F

    Heavy Snow
    and Breezy

  • Friday Night

    Friday Night: Snow likely, mainly before 10pm. Mostly cloudy, with a low around 10. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 10 °F

    Snow Likely

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before 4pm. Mostly sunny, with a high near 32. Little or no snow accumulation expected.

    High: 32 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A slight chance of snow before 10pm. Mostly clear, with a low around 10.

    Low: 10 °F

    Slight Chance
    Snow then
    Mostly Clear

Detailed Forecast

Today
Snow. The snow could be heavy at times. High near 38. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 9 to 13 inches possible.
Tonight
Snow. The snow could be heavy at times. Low around 26. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.
Christmas Day
Snow. The snow could be heavy at times. High near 34. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.
Thursday Night
Snow before 10pm, then snow showers between 10pm and 4am, then snow after 4am. The snow could be heavy at times. Some thunder is also possible. Low around 25. Breezy, with a south wind around 25 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 9 to 13 inches possible.
Friday
Snow. The snow could be heavy at times. High near 32. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 10. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
A 30 percent chance of snow, mainly before 4pm. Mostly sunny, with a high near 32. Little or no snow accumulation expected.
Saturday Night
A slight chance of snow before 10pm. Mostly clear, with a low around 10.
Sunday
Sunny, with a high near 35.
Sunday Night
Mostly clear, with a low around 16.
Monday
Sunny, with a high near 40.
Monday Night
Mostly clear, with a low around 21.
Tuesday
A slight chance of rain and snow. Mostly sunny, with a high near 45.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Lakes CA
 37.66°N 118.97°W (Elev. 8301 ft)
Last Update:
9:15 am PST Dec 24, 2025
Forecast Valid:
9am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation