Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Mammoth Yosemite Airport (KMMH)

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

Clear

5°F

-15°C

Humidity 84%
Wind Speed N 0 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Last update 20 Jan 06:15 AM PST
Extended Forecast for

7 Miles SE Mammoth Lakes CA

  • Today

    Today: Mostly sunny, with a high near 35. Southwest wind around 10 mph.

    High: 35 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 21. Southwest wind around 10 mph.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 37. West wind 10 to 15 mph.

    High: 37 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 23. West wind around 5 mph.

    Low: 23 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow.  Mostly cloudy, with a high near 30. Northwest wind around 10 mph.

    High: 30 °F

    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 18. West wind 10 to 15 mph.

    Low: 18 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 32.

    High: 32 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 13.

    Low: 13 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 29. Blustery.

    High: 29 °F

    Sunny and
    Blustery

Detailed Forecast

Today
Mostly sunny, with a high near 35. Southwest wind around 10 mph.
Tonight
Mostly cloudy, with a low around 21. Southwest wind around 10 mph.
Wednesday
Mostly cloudy, with a high near 37. West wind 10 to 15 mph.
Wednesday Night
Mostly cloudy, with a low around 23. West wind around 5 mph.
Thursday
A 20 percent chance of snow. Mostly cloudy, with a high near 30. Northwest wind around 10 mph.
Thursday Night
Mostly cloudy, with a low around 18. West wind 10 to 15 mph.
Friday
Sunny, with a high near 32.
Friday Night
Partly cloudy, with a low around 13.
Saturday
Sunny, with a high near 29. Blustery.
Saturday Night
Mostly clear, with a low around 15.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Mostly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 35.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SE Mammoth Lakes CA
 37.56°N 118.89°W (Elev. 10407 ft)
1:15 am PST Jan 20, 2026
6am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database