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

Mammoth Yosemite Airport (KMMH)

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

light snow,mist

32°F

0°C

Humidity 100%
Wind Speed WSW 4 MPH
Barometer 29.82 in (1009.82 mb)
Dewpoint 32°F (0°C)
Visibility 0.50 mi
Wind Chill28°F (-2°C)
Last update 24 Dec 06:55 AM PST
Extended Forecast for

7 Miles ESE 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: 44 °F

    Rain/Snow

  • Tonight

    Tonight: Snow. The snow could be heavy at times. Low around 27. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 27 °F

    Heavy Snow

  • Christmas Day

    Christmas Day: Snow. The snow could be heavy at times. High near 39. Breezy, with a south wind 20 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: 39 °F

    Heavy Snow
    and Breezy

  • Thursday Night

    Thursday Night: Snow. The snow could be heavy at times. Low around 27. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    Low: 27 °F

    Heavy Snow
    and Breezy

  • Friday

    Friday: Snow. The snow could be heavy at times. High near 37. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 37 °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. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 10 °F

    Snow Likely

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before 4pm. Mostly sunny, with a high near 36. Little or no snow accumulation expected.

    High: 36 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A slight chance of snow before 10pm. Mostly clear, with a low around 8.

    Low: 8 °F

    Slight Chance
    Snow then
    Mostly Clear

Detailed Forecast

Today
Rain and snow. The rain could be heavy at times. Snow level 7900 feet lowering to 7300 feet in the afternoon . High near 44. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Total daytime snow accumulation of around an inch possible.
Tonight
Snow. The snow could be heavy at times. Low around 27. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Christmas Day
Snow. The snow could be heavy at times. High near 39. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Thursday Night
Snow. The snow could be heavy at times. Low around 27. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Friday
Snow. The snow could be heavy at times. High near 37. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 10. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Saturday
A 30 percent chance of snow, mainly before 4pm. Mostly sunny, with a high near 36. Little or no snow accumulation expected.
Saturday Night
A slight chance of snow before 10pm. Mostly clear, with a low around 8.
Sunday
Sunny, with a high near 40.
Sunday Night
Mostly clear, with a low around 13.
Monday
Sunny, with a high near 45.
Monday Night
Mostly clear, with a low around 18.
Tuesday
A slight chance of rain and snow. Snow level rising to 8400 feet in the afternoon. Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles ESE Mammoth Lakes CA
 37.63°N 118.85°W (Elev. 7152 ft)
Last Update:
1:15 am PST Dec 24, 2025
Forecast Valid:
7am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation