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

Heavy Mountain Snow in the Northwest U.S.; Wintry Mix North-Central to Northeast U.S.

Two cold fronts will pass through the Northwest U.S. this week with the main impact being heavy mountain snow across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain to the Upper Midwest and Great Lakes overnight into Tuesday then the Northeast U.S. Tuesday night into Wednesday. Read More >

Current conditions at

Mammoth Yosemite Airport (KMMH)

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

Overcast

23°F

-5°C

Humidity 79%
Wind Speed N 0 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 05 Jan 10:35 PM PST
Extended Forecast for

7 Miles ESE Mammoth Lakes CA

  • Tonight

    Tonight: Partly cloudy, with a low around 14. Southwest wind around 5 mph becoming calm.

    Low: 14 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 37. Calm wind.

    High: 37 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 15. Calm wind.

    Low: 15 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38. Calm wind becoming west around 5 mph in the morning.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after 10pm. Partly cloudy, with a low around 12. Southwest wind around 5 mph.

    Low: 12 °F

    Slight Chance
    Snow

  • Thursday

    Thursday: A 20 percent chance of snow before 10am. Sunny, with a high near 34. Northwest wind around 5 mph.

    High: 34 °F

    Slight Chance
    Snow then
    Sunny

  • Thursday Night

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

    Low: 10 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 38.

    High: 38 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 14.

    Low: 14 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 14. Southwest wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 37. Calm wind.
Tuesday Night
Mostly clear, with a low around 15. Calm wind.
Wednesday
Mostly sunny, with a high near 38. Calm wind becoming west around 5 mph in the morning.
Wednesday Night
A 20 percent chance of snow after 10pm. Partly cloudy, with a low around 12. Southwest wind around 5 mph.
Thursday
A 20 percent chance of snow before 10am. Sunny, with a high near 34. Northwest wind around 5 mph.
Thursday Night
Mostly clear, with a low around 10.
Friday
Sunny, with a high near 38.
Friday Night
Mostly clear, with a low around 14.
Saturday
Sunny, with a high near 42.
Saturday Night
Mostly clear, with a low around 19.
Sunday
Sunny, with a high near 46.
Sunday Night
Mostly clear, with a low around 18.
Monday
Sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles ESE Mammoth Lakes CA
 37.61°N 118.85°W (Elev. 7372 ft)
Last Update:
9:15 pm PST Jan 5, 2026
Forecast Valid:
10pm PST Jan 5, 2026-6pm PST Jan 12, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation