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

34°F

1°C

Humidity 59%
Wind Speed N 0 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 19 Jan 01:35 PM PST
Extended Forecast for

9 Miles SE Mammoth Lakes CA

  • Tonight

    Tonight: Mostly clear, with a low around 20. Northwest wind 5 to 10 mph becoming southwest after midnight.

    Low: 20 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 23. Southwest wind around 10 mph.

    Low: 23 °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 after 10am.  Mostly cloudy, with a high near 31. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 31 °F

    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Friday Night

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

    Low: 13 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 20. Northwest wind 5 to 10 mph becoming southwest after midnight.
Tuesday
Mostly sunny, with a high near 36. Southwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 23. 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 after 10am. Mostly cloudy, with a high near 31. Northwest wind around 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 18.
Friday
Mostly sunny, with a high near 30.
Friday Night
Partly cloudy, with a low around 13.
Saturday
Sunny, with a high near 28.
Saturday Night
Mostly clear, with a low around 14.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Mostly sunny, with a high near 35.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles SE Mammoth Lakes CA
 37.54°N 118.89°W (Elev. 10719 ft)
1:15 pm PST Jan 19, 2026
4pm 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