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

Top Stn/Summit (MTH03)

Lat: 37.63059°NLon: 119.03282°WElev: 11034.0ft.

NA

33°F

1°C

Humidity 27%
Wind Speed NE 0 MPH
Barometer NA
Dewpoint 2°F (-17°C)
Visibility NA
Last update 19 Jan 08:45 PM PST
Extended Forecast for

3 Miles WNW Mammoth Lakes CA

  • Tonight

    Tonight: Mostly clear, with a low around 30. North wind around 5 mph becoming calm.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 46. Southwest wind around 5 mph.

    High: 46 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 46. Southwest wind around 5 mph.

    High: 46 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after 10am.  Mostly cloudy, with a high near 39. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 39 °F

    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 30. North wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 46. Southwest wind around 5 mph.
Tuesday Night
Mostly cloudy, with a low around 32. Calm wind.
Wednesday
Mostly cloudy, with a high near 46. Southwest wind around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 32. Calm wind.
Thursday
A 20 percent chance of snow after 10am. Mostly cloudy, with a high near 39. Calm wind becoming northwest around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 27.
Friday
Mostly sunny, with a high near 39.
Friday Night
Partly cloudy, with a low around 22.
Saturday
Sunny, with a high near 37.
Saturday Night
Mostly clear, with a low around 23.
Sunday
Mostly sunny, with a high near 43.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Mostly sunny, with a high near 44.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Mammoth Lakes CA
 37.65°N 119.03°W (Elev. 8809 ft)
1:15 pm PST Jan 19, 2026
9pm 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