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

Lake Effect Snow in the Lower Great Lakes; Unsettled Pattern in the Pacific Northwest

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. Lake Effect Snow Warnings have been issued. 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 this afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. Read More >

Current conditions at

Top of 22 (MTH02)

Lat: 37.63707°NLon: 119.0174°WElev: 10100.0ft.

NA

16°F

-9°C

Humidity 92%
Wind Speed NNE 9 MPH
Barometer NA
Dewpoint 14°F (-10°C)
Visibility NA
Wind Chill5°F (-15°C)
Last update 12 Feb 06:25 AM PST
Extended Forecast for

Mammoth Lakes CA

  • Today

    Today: A 20 percent chance of snow showers after 1pm. Mostly sunny, with a high near 35. Calm wind becoming north around 5 mph in the afternoon.

    High: 35 °F

    Mostly Sunny
    then Slight
    Chance Snow
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 15. Northwest wind around 5 mph becoming calm in the evening.

    Low: 15 °F

    Partly Cloudy

  • Friday

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

    High: 40 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 20. Calm wind becoming southwest around 5 mph.

    Low: 20 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 42. Southwest wind 5 to 10 mph, with gusts as high as 30 mph.

    High: 42 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 21. Southwest wind around 10 mph, with gusts as high as 30 mph.

    Low: 21 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of snow, mainly after 4pm. Mostly sunny, with a high near 39. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly after 10pm. The snow could be heavy at times. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Heavy Snow

  • Washington's Birthday

    Washington's Birthday: Snow. The snow could be heavy at times. Cloudy, with a high near 31.

    High: 31 °F

    Heavy Snow

Detailed Forecast

Today
A 20 percent chance of snow showers after 1pm. Mostly sunny, with a high near 35. Calm wind becoming north around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 15. Northwest 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 20. Calm wind becoming southwest around 5 mph.
Saturday
Mostly sunny, with a high near 42. Southwest wind 5 to 10 mph, with gusts as high as 30 mph.
Saturday Night
Mostly cloudy, with a low around 21. Southwest wind around 10 mph, with gusts as high as 30 mph.
Sunday
A 30 percent chance of snow, mainly after 4pm. Mostly sunny, with a high near 39. New snow accumulation of less than a half inch possible.
Sunday Night
Snow likely, mainly after 10pm. The snow could be heavy at times. Mostly cloudy, with a low around 20.
Washington's Birthday
Snow. The snow could be heavy at times. Cloudy, with a high near 31.
Monday Night
Snow. The snow could be heavy at times. Cloudy, with a low around 18.
Tuesday
Snow. The snow could be heavy at times. Mostly cloudy, with a high near 27.
Tuesday Night
Snow likely. The snow could be heavy at times. Mostly cloudy, with a low around 12.
Wednesday
A chance of snow. The snow could be heavy at times. Partly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Lakes CA
 37.66°N 119°W (Elev. 8681 ft)
Last Update:
1:53 am PST Feb 12, 2026
Forecast Valid:
6am PST Feb 12, 2026-6pm PST Feb 18, 2026
 
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Additional Resources

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Chance of Precipitation