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

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Hazardous Weather Conditions

Current conditions at

DW5868 Mammoth Lakes (D5868)

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

NA

32°F

0°C

Humidity 88%
Wind Speed WNW 1 MPH
Barometer 29.72 in (1006.44 mb)
Dewpoint 29°F (-2°C)
Visibility NA
Last update 24 Dec 12:15 AM PST
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

  • Overnight

    Low: 31 °F

    Heavy Snow
    and Breezy

  • Wednesday

    Wednesday: Snow. The snow could be heavy at times. High near 36. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New snow accumulation of 14 to 20 inches possible.

    High: 36 °F

    Heavy Snow
    and Breezy

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times. Low around 27. Windy, with a south wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of 7 to 11 inches possible.

    Low: 27 °F

    Heavy Snow
    and Windy

  • Christmas Day

    Christmas Day: Snow. The snow could be heavy at times. High near 31. Windy, with a south wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.

    High: 31 °F

    Heavy Snow
    and Windy

  • Thursday Night

    Thursday Night: Snow. The snow could be heavy at times. Low around 23. 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 11 to 17 inches possible.

    Low: 23 °F

    Heavy Snow
    and Windy

  • Friday

    Friday: Snow. The snow could be heavy at times. High near 27. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    High: 27 °F

    Heavy Snow
    and Breezy

  • Friday Night

    Friday Night: Snow likely, mainly before 10pm. Mostly cloudy, with a low around 12. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 12 °F

    Snow Likely
    then Chance
    Snow

  • Saturday

    Saturday: A slight chance of snow. Mostly sunny, with a high near 28.

    High: 28 °F

    Slight Chance
    Snow

Detailed Forecast

Overnight
Snow. The snow could be heavy at times. Low around 31. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 7 to 11 inches possible.
Wednesday
Snow. The snow could be heavy at times. High near 36. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New snow accumulation of 14 to 20 inches possible.
Wednesday Night
Snow. The snow could be heavy at times. Low around 27. Windy, with a south wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of 7 to 11 inches possible.
Christmas Day
Snow. The snow could be heavy at times. High near 31. Windy, with a south wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.
Thursday Night
Snow. The snow could be heavy at times. Low around 23. 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 11 to 17 inches possible.
Friday
Snow. The snow could be heavy at times. High near 27. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 12. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Saturday
A slight chance of snow. Mostly sunny, with a high near 28.
Saturday Night
Mostly clear, with a low around 14.
Sunday
Sunny, with a high near 31.
Sunday Night
Mostly clear, with a low around 19.
Monday
Sunny, with a high near 37.
Monday Night
Mostly clear, with a low around 24.
Tuesday
Mostly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Lakes CA
 37.62°N 118.96°W (Elev. 8930 ft)
Last Update:
9:15 pm PST Dec 23, 2025
Forecast Valid:
12am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation