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

18°F

-8°C

Humidity 72%
Wind Speed N 0 MPH
Barometer 30.34 in (1027.43 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 19 Jan 11:35 PM PST
Extended Forecast for

10 Miles E Mammoth Lakes CA

  • Tonight

    Tonight: Mostly clear, with a low around 18. Calm wind.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 42. Calm wind.

    High: 42 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 48. Calm wind.

    High: 48 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24. Calm wind.

    Low: 24 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain and snow between 10am and 1pm, then a slight chance of rain after 1pm.  Snow level 7500 feet. Mostly cloudy, with a high near 42. Calm wind.  Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 13.

    Low: 13 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 18. Calm wind.
Tuesday
Mostly sunny, with a high near 42. Calm wind.
Tuesday Night
Mostly cloudy, with a low around 21. Calm wind.
Wednesday
Mostly cloudy, with a high near 48. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 24. Calm wind.
Thursday
A slight chance of rain and snow between 10am and 1pm, then a slight chance of rain after 1pm. Snow level 7500 feet. Mostly cloudy, with a high near 42. Calm wind. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
Mostly sunny, with a high near 42.
Friday Night
Mostly clear, with a low around 13.
Saturday
Sunny, with a high near 39.
Saturday Night
Mostly clear, with a low around 14.
Sunday
Mostly sunny, with a high near 45.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Mostly sunny, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles E Mammoth Lakes CA
 37.66°N 118.8°W (Elev. 6998 ft)
9:15 pm PST Jan 19, 2026
11pm PST Jan 19, 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