National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

Mammoth Yosemite Airport (KMMH)

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

Clear

7°F

-14°C

Humidity 65%
Wind Speed N 0 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Last update 28 Dec 05:15 AM PST
Extended Forecast for

9 Miles SE Mammoth Lakes CA

  • Today

    Today: Mostly sunny, with a high near 27. North wind around 10 mph.

    High: 27 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 6. Breezy, with a west wind 15 to 20 mph becoming southeast after midnight. Winds could gust as high as 30 mph.

    Low: 6 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Monday

    Monday: Sunny, with a high near 30. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 30 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Clear, with a low around 14. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 14 °F

    Clear and
    Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 35. South wind 10 to 15 mph becoming north in the afternoon.

    High: 35 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 18. Southwest wind 10 to 15 mph.

    Low: 18 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 10 percent chance of snow after 4pm. Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: A chance of snow, mainly after 10pm. Mostly cloudy, with a low around 22.

    Low: 22 °F

    Chance Snow

  • New Year's Day

    New Year's Day: A chance of snow. Partly sunny, with a high near 34.

    High: 34 °F

    Chance Snow

Detailed Forecast

Today
Mostly sunny, with a high near 27. North wind around 10 mph.
Tonight
Mostly clear, with a low around 6. Breezy, with a west wind 15 to 20 mph becoming southeast after midnight. Winds could gust as high as 30 mph.
Monday
Sunny, with a high near 30. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 35 mph.
Monday Night
Clear, with a low around 14. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 35. South wind 10 to 15 mph becoming north in the afternoon.
Tuesday Night
Partly cloudy, with a low around 18. Southwest wind 10 to 15 mph.
Wednesday
A 10 percent chance of snow after 4pm. Mostly sunny, with a high near 37.
Wednesday Night
A chance of snow, mainly after 10pm. Mostly cloudy, with a low around 22.
New Year's Day
A chance of snow. Partly sunny, with a high near 34.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 20. Windy.
Friday
Snow likely. Mostly cloudy, with a high near 31. Windy.
Friday Night
A chance of snow. Mostly cloudy, with a low around 17. Windy.
Saturday
A chance of snow. Partly sunny, with a high near 31. Very windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles SE Mammoth Lakes CA
 37.56°N 118.87°W (Elev. 11175 ft)
Last Update:
1:15 am PST Dec 28, 2025
Forecast Valid:
5am PST Dec 28, 2025-6pm PST Jan 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation