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

25°F

-4°C

Humidity 58%
Wind Speed N 0 MPH
Barometer 30.3 in (1026.08 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Last update 19 Jan 01:35 AM PST
Extended Forecast for

12 Miles ENE Mammoth Lakes CA

  • Overnight

    Overnight: Partly cloudy, with a low around 6. Calm wind.

    Low: 6 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 36. Calm wind.

    High: 36 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 4. Calm wind.

    Low: 4 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 37. Calm wind.

    High: 37 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 7. Calm wind.

    Low: 7 °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 23.

    Low: 23 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Thursday Night

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

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 6. Calm wind.
M.L.King Day
Sunny, with a high near 36. Calm wind.
Monday Night
Mostly clear, with a low around 4. Calm wind.
Tuesday
Mostly sunny, with a high near 37. Calm wind.
Tuesday Night
Mostly cloudy, with a low around 7. Calm wind.
Wednesday
Mostly cloudy, with a high near 48. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Partly sunny, with a high near 43.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Mostly sunny, with a high near 41.
Friday Night
Mostly clear, with a low around 16.
Saturday
Sunny, with a high near 43.
Saturday Night
Mostly clear, with a low around 14.
Sunday
Mostly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles ENE Mammoth Lakes CA
 37.69°N 118.75°W (Elev. 6824 ft)
1:15 am PST Jan 19, 2026
1am PST Jan 19, 2026-6pm PST Jan 25, 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