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

14°F

-10°C

Humidity 78%
Wind Speed N 0 MPH
Barometer 30.33 in (1027.09 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Last update 20 Jan 12:55 AM PST
Extended Forecast for

7 Miles ESE Mammoth Lakes CA

  • Overnight

    Overnight: Mostly clear, with a low around 20. Calm wind.

    Low: 20 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45. Calm wind becoming west around 5 mph.

    High: 45 °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 46. Calm wind.

    High: 46 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 22. Calm wind.

    Low: 22 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain and snow after 10am.  Snow level 7500 feet. Mostly cloudy, with a high near 41. Calm wind becoming northeast around 5 mph in the afternoon.  Chance of precipitation is 20%.

    High: 41 °F

    Slight Chance
    Rain/Snow

  • Thursday Night

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

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Friday Night

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

    Low: 13 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 20. Calm wind.
Tuesday
Mostly sunny, with a high near 45. Calm wind becoming west around 5 mph.
Tuesday Night
Mostly cloudy, with a low around 21. Calm wind.
Wednesday
Mostly cloudy, with a high near 46. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 22. Calm wind.
Thursday
A slight chance of rain and snow after 10am. Snow level 7500 feet. Mostly cloudy, with a high near 41. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Mostly sunny, with a high near 39.
Friday Night
Mostly clear, with a low around 13.
Saturday
Sunny, with a high near 38.
Saturday Night
Mostly clear, with a low around 12.
Sunday
Mostly sunny, with a high near 43.
Sunday Night
Partly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles ESE Mammoth Lakes CA
 37.63°N 118.85°W (Elev. 7152 ft)
9:15 pm PST Jan 19, 2026
1am 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