Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Mammoth Yosemite Airport (KMMH)

Lat: 37.6241°NLon: 118.8423°WElev: 7112.0ft.

Clear

16°F

-9°C

Humidity 72%
Wind Speed N 0 MPH
Barometer 30.3 in (1026.08 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 20 Jan 09:55 PM PST
Extended Forecast for

10 Miles ESE Mammoth Lakes CA

  • Tonight

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

    Low: 18 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 42. Calm wind.

    High: 42 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A slight chance of rain between 4am and 5am, then a slight chance of snow after 5am.  Snow level 7500 feet. Mostly cloudy, with a low around 18. Calm wind.  Chance of precipitation is 10%.

    Low: 18 °F

    Cloudy then
    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow before 11am, then a chance of snow between 11am and noon, then a chance of rain after noon.  Snow level 7500 feet. Mostly cloudy, with a high near 39. Calm wind.  Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 39 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 10pm.  Snow level 7200 feet. Mostly cloudy, with a low around 15. Calm wind.

    Low: 15 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43. Calm wind becoming north around 5 mph.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 36.

    High: 36 °F

    Sunny

  • Saturday Night

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

    Low: 13 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 18. Calm wind.
Wednesday
Mostly cloudy, with a high near 42. Calm wind.
Wednesday Night
A slight chance of rain between 4am and 5am, then a slight chance of snow after 5am. Snow level 7500 feet. Mostly cloudy, with a low around 18. Calm wind. Chance of precipitation is 10%.
Thursday
A chance of rain and snow before 11am, then a chance of snow between 11am and noon, then a chance of rain after noon. Snow level 7500 feet. Mostly cloudy, with a high near 39. Calm wind. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday Night
A 20 percent chance of rain before 10pm. Snow level 7200 feet. Mostly cloudy, with a low around 15. Calm wind.
Friday
Mostly sunny, with a high near 43. Calm wind becoming north around 5 mph.
Friday Night
Partly cloudy, with a low around 15.
Saturday
Sunny, with a high near 36.
Saturday Night
Mostly clear, with a low around 13.
Sunday
Mostly sunny, with a high near 42.
Sunday Night
Partly cloudy, with a low around 18.
Monday
Mostly sunny, with a high near 44.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Mostly sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles ESE Mammoth Lakes CA
 37.6°N 118.79°W (Elev. 6909 ft)
9:15 pm PST Jan 20, 2026
10pm PST Jan 20, 2026-6pm PST Jan 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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