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

Lake Effect Snow in the Lower Great Lakes; Rain and High Elevation Snow in the West

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. In the Western U.S., rain and higher elevation snow will continue over the Great Basin through Friday. A front will move over the Pacific Northwest Thursday afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. Read More >

Current conditions at

Mammoth Yosemite Airport (KMMH)

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

Clear

16°F

-9°C

Humidity 66%
Wind Speed W 6 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 12 Feb 03:55 AM PST
Extended Forecast for

4 Miles ENE Mammoth Lakes CA

  • Today

    Today: A 20 percent chance of snow showers after 1pm. Mostly sunny, with a high near 36. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 36 °F

    Mostly Sunny
    then Slight
    Chance Snow
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 13. West wind around 5 mph becoming calm in the evening.

    Low: 13 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 40. Calm wind.

    High: 40 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 18. Calm wind becoming southwest around 5 mph.

    Low: 18 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 44. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 44 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 19. Southwest wind 5 to 10 mph.

    Low: 19 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of snow after 10am. Mostly sunny, with a high near 40.

    High: 40 °F

    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: A chance of snow. Increasing clouds, with a low around 19.

    Low: 19 °F

    Chance Snow

  • Washington's Birthday

    Washington's Birthday: Snow. The snow could be heavy at times. Cloudy, with a high near 32.

    High: 32 °F

    Heavy Snow

Detailed Forecast

Today
A 20 percent chance of snow showers after 1pm. Mostly sunny, with a high near 36. Calm wind becoming northwest around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 13. West wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 40. Calm wind.
Friday Night
Mostly clear, with a low around 18. Calm wind becoming southwest around 5 mph.
Saturday
Mostly sunny, with a high near 44. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 19. Southwest wind 5 to 10 mph.
Sunday
A 20 percent chance of snow after 10am. Mostly sunny, with a high near 40.
Sunday Night
A chance of snow. Increasing clouds, with a low around 19.
Washington's Birthday
Snow. The snow could be heavy at times. Cloudy, with a high near 32.
Monday Night
Snow. Cloudy, with a low around 17.
Tuesday
Snow. The snow could be heavy at times. Mostly cloudy, with a high near 29.
Tuesday Night
Snow likely. The snow could be heavy at times. Mostly cloudy, with a low around 12.
Wednesday
A chance of snow. Partly sunny, with a high near 30.
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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:
1:53 am PST Feb 12, 2026
Forecast Valid:
4am PST Feb 12, 2026-6pm PST Feb 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation