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

Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Hazardous Weather Conditions

Current conditions at

Mammoth Yosemite Airport (KMMH)

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

Clear

68°F

20°C

Humidity 22%
Wind Speed SE 4 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 04 Sep 12:15 PM PDT
Extended Forecast for

9 Miles ESE Mammoth Lakes CA

Lake Wind Advisory until September 4, 09:00pm
Click here for hazard details and duration
Lake Wind Advisory
  •  
    Lake Wind Advisory until September 4, 09:00pm

    NOW until 9:00pm Fri

    Lake Wind Advisory

  • This Afternoon

    High: 52 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 31. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.

    Low: 31 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny, with a high near 54. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 54 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 40 mph.

    Low: 33 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny, with a high near 51. Windy, with a southwest wind 25 to 30 mph, with gusts as high as 45 mph.

    High: 51 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: Clear, with a low around 30. Windy, with a southwest wind 20 to 30 mph, with gusts as high as 45 mph.

    Low: 30 °F

    Clear and
    Windy

  • Labor Day

    Labor Day: Sunny, with a high near 56. Breezy.

    High: 56 °F

    Sunny and
    Breezy then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 52. Breezy, with a southwest wind around 25 mph, with gusts as high as 40 mph.
Tonight
Mostly clear, with a low around 31. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.
Saturday
Sunny, with a high near 54. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 35 mph.
Saturday Night
Mostly clear, with a low around 33. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 40 mph.
Sunday
Sunny, with a high near 51. Windy, with a southwest wind 25 to 30 mph, with gusts as high as 45 mph.
Sunday Night
Clear, with a low around 30. Windy, with a southwest wind 20 to 30 mph, with gusts as high as 45 mph.
Labor Day
Sunny, with a high near 56. Breezy.
Monday Night
Mostly clear, with a low around 34.
Tuesday
A slight chance of rain and snow showers between 11am and 2pm, then a slight chance of rain showers after 2pm. Mostly sunny, with a high near 57.
Tuesday Night
A chance of showers. Snow level 11800 feet. Mostly cloudy, with a low around 40.
Wednesday
A chance of showers. Snow level 11900 feet rising to 13000 feet in the afternoon. Partly sunny, with a high near 54.
Wednesday Night
A chance of showers. Snow level 13000 feet. Mostly cloudy, with a low around 40.
Thursday
A chance of showers and thunderstorms. Snow level 13000 feet. Partly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ESE Mammoth Lakes CA
 37.56°N 118.87°W (Elev. 11175 ft)
Last Update:
11:30 am PDT Sep 4, 2026
Forecast Valid:
12pm PDT Sep 4, 2026-6pm PDT Sep 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation