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

19°F

-7°C

Humidity 73%
Wind Speed N 5 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 20 Jan 11:35 PM PST
Extended Forecast for

9 Miles ENE Mammoth Lakes CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 12. Calm wind.

    Low: 12 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 40. Calm wind.

    High: 40 °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 7300 feet. Cloudy, with a low around 13. Calm wind.  Chance of precipitation is 10%.

    Low: 13 °F

    Cloudy then
    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow before 1pm, then a chance of rain.  Snow level 7400 feet. Mostly cloudy, with a high near 37. Calm wind.  Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 37 °F

    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A slight chance of rain, mixing with snow after 7pm, then gradually ending.  Snow level 7200 feet. Mostly cloudy, with a low around 10. Calm wind.  Chance of precipitation is 20%.

    Low: 10 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 42. Calm wind becoming north around 5 mph.

    High: 42 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 35.

    High: 35 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 12. Calm wind.
Wednesday
Mostly cloudy, with a high near 40. Calm wind.
Wednesday Night
A slight chance of rain between 4am and 5am, then a slight chance of snow after 5am. Snow level 7300 feet. Cloudy, with a low around 13. Calm wind. Chance of precipitation is 10%.
Thursday
A chance of rain and snow before 1pm, then a chance of rain. Snow level 7400 feet. Mostly cloudy, with a high near 37. Calm wind. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday Night
A slight chance of rain, mixing with snow after 7pm, then gradually ending. Snow level 7200 feet. Mostly cloudy, with a low around 10. Calm wind. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 42. Calm wind becoming north around 5 mph.
Friday Night
Partly cloudy, with a low around 12.
Saturday
Sunny, with a high near 35.
Saturday Night
Mostly clear, with a low around 10.
Sunday
Mostly sunny, with a high near 41.
Sunday Night
Partly cloudy, with a low around 15.
Monday
Partly sunny, with a high near 43.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Mostly sunny, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ENE Mammoth Lakes CA
 37.68°N 118.81°W (Elev. 6890 ft)
9:15 pm PST Jan 20, 2026
11pm 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

National Digital Forecast Database