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 29.67 in (1004.74 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: 33 °F

    Heavy Snow
    and Breezy

  • Tonight

    Tonight: Snow. The snow could be heavy at times. Low around 24. Windy, with a south wind 30 to 35 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 9 to 13 inches possible.

    Low: 24 °F

    Heavy Snow
    and Windy

  • Christmas Day

    Christmas Day: Snow. The snow could be heavy at times. High near 28. Windy, with a south wind 30 to 35 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 14 to 20 inches possible.

    High: 28 °F

    Heavy Snow
    and Windy

  • Thursday Night

    Thursday Night: Snow before 10pm, then snow showers after 10pm. The snow could be heavy at times. Some thunder is also possible. Low around 23. Very windy, with a south wind 35 to 40 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.

    Low: 23 °F

    Heavy Snow
    and Very
    Windy

  • Friday

    Friday: Snow. The snow could be heavy at times. High near 26. Windy, with a southwest wind 25 to 30 mph decreasing to 20 to 25 mph in the afternoon. Winds could gust as high as 65 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.

    High: 26 °F

    Heavy Snow
    and Windy

  • Friday Night

    Friday Night: Snow likely, mainly before 10pm. Mostly cloudy, with a low around 12. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 12 °F

    Snow Likely

  • Saturday

    Saturday: A 40 percent chance of snow, mainly before 4pm. Partly sunny, with a high near 25. Little or no snow accumulation expected.

    High: 25 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A slight chance of snow before 10pm. Mostly clear, with a low around 13.

    Low: 13 °F

    Slight Chance
    Snow then
    Mostly Clear

Detailed Forecast

Today
Snow. The snow could be heavy at times. High near 33. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 16 to 22 inches possible.
Tonight
Snow. The snow could be heavy at times. Low around 24. Windy, with a south wind 30 to 35 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 9 to 13 inches possible.
Christmas Day
Snow. The snow could be heavy at times. High near 28. Windy, with a south wind 30 to 35 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 14 to 20 inches possible.
Thursday Night
Snow before 10pm, then snow showers after 10pm. The snow could be heavy at times. Some thunder is also possible. Low around 23. Very windy, with a south wind 35 to 40 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.
Friday
Snow. The snow could be heavy at times. High near 26. Windy, with a southwest wind 25 to 30 mph decreasing to 20 to 25 mph in the afternoon. Winds could gust as high as 65 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 12. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
A 40 percent chance of snow, mainly before 4pm. Partly sunny, with a high near 25. Little or no snow accumulation expected.
Saturday Night
A slight chance of snow before 10pm. Mostly clear, with a low around 13.
Sunday
Sunny, with a high near 28.
Sunday Night
Mostly clear, with a low around 17.
Monday
Sunny, with a high near 33.
Monday Night
Mostly clear, with a low around 22.
Tuesday
A slight chance of snow. Mostly sunny, with a high near 38.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Lakes CA
 37.61°N 118.99°W (Elev. 9137 ft)
Last Update:
9:15 am PST Dec 24, 2025
Forecast Valid:
10am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation