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

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Hazardous Weather Conditions

Current conditions at

Mammoth Yosemite Airport (KMMH)

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

unknown precip,mist

30°F

-1°C

Humidity 92%
Wind Speed ESE 5 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 28°F (-2°C)
Visibility 3.00 mi
Wind Chill25°F (-4°C)
Last update 26 Dec 08:15 AM PST
Extended Forecast for

4 Miles ENE Mammoth Lakes CA

Winter Storm Warning December 26, 08:39am until December 26, 04:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning December 26, 08:39am until December 26, 04:00pm

    NOW until 4:00pm Fri

    Winter Storm Warning

  • Today

    High: 35 °F

    Heavy Snow

  • Tonight

    Tonight: A 30 percent chance of snow, mainly before 10pm. Mostly clear, with a low around 13. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.

    Low: 13 °F

    Chance Snow

  • Saturday

    Saturday: Sunny, with a high near 35. West wind around 5 mph becoming calm.

    High: 35 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 10. West wind around 5 mph.

    Low: 10 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 37. West wind around 5 mph becoming north in the afternoon.

    High: 37 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 9. West wind around 5 mph.

    Low: 9 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 11.

    Low: 11 °F

    Clear

Detailed Forecast

Today
Snow, mainly before 1pm. The snow could be heavy at times. High near 35. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 3 to 5 inches possible.
Tonight
A 30 percent chance of snow, mainly before 10pm. Mostly clear, with a low around 13. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.
Saturday
Sunny, with a high near 35. West wind around 5 mph becoming calm.
Saturday Night
Mostly clear, with a low around 10. West wind around 5 mph.
Sunday
Mostly sunny, with a high near 37. West wind around 5 mph becoming north in the afternoon.
Sunday Night
Mostly clear, with a low around 9. West wind around 5 mph.
Monday
Sunny, with a high near 41.
Monday Night
Clear, with a low around 11.
Tuesday
Sunny, with a high near 46.
Tuesday Night
Mostly clear, with a low around 19.
Wednesday
Mostly sunny, with a high near 47.
Wednesday Night
A slight chance of snow. Partly cloudy, with a low around 27.
New Year's Day
A chance of snow. Partly sunny, with a high near 44.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Mammoth Lakes CA
 37.67°N 118.89°W (Elev. 7671 ft)
Last Update:
1:15 am PST Dec 26, 2025
Forecast Valid:
8am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation