Pacific Storm System Across the West; Fire Weather Concerns in the Southeast

A Pacific storm system will bring strong winds and low elevation rain to much of the West Coast, and heavy high elevation mountain snow to the Sierra-Nevada through Wednesday. Fire weather concerns will continue into Tuesday across the Mid-South and Southeast as gusty winds and dry conditions persist. Read More >

Current conditions at

Mammoth Yosemite Airport (KMMH)

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

Partly Cloudy

48°F

9°C

Humidity 26%
Wind Speed S 13 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 21 Apr 12:55 AM PDT
Extended Forecast for

6 Miles ENE Mammoth Lakes CA

Winter Weather Advisory April 21, 05:00am until April 22, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory
  • Overnight

    Overnight: Mostly clear, with a low around 34. West wind around 10 mph becoming southeast. Winds could gust as high as 20 mph.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Rain and snow showers likely between 8am and 2pm, then snow showers. Some thunder is also possible.  Snow level 8100 feet lowering to 7700 feet in the afternoon . High near 49. Breezy, with a southeast wind 10 to 20 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph.  Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    High: 49 °F

    Rain/Snow and
    Breezy

  • Tuesday Night

    Tuesday Night: Snow showers, mainly before 11pm. The snow could be heavy at times. Some thunder is also possible.  Low around 21. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 21 °F

    Heavy Snow
    and Breezy
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: A 20 percent chance of snow showers.  Mostly sunny, with a high near 43. West wind around 10 mph, with gusts as high as 20 mph.

    High: 43 °F

    Slight Chance
    Snow Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 20. West wind 5 to 10 mph becoming light  in the evening. Winds could gust as high as 20 mph.

    Low: 20 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 53. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 34. West wind around 10 mph becoming southeast. Winds could gust as high as 20 mph.
Tuesday
Rain and snow showers likely between 8am and 2pm, then snow showers. Some thunder is also possible. Snow level 8100 feet lowering to 7700 feet in the afternoon . High near 49. Breezy, with a southeast wind 10 to 20 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Tuesday Night
Snow showers, mainly before 11pm. The snow could be heavy at times. Some thunder is also possible. Low around 21. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday
A 20 percent chance of snow showers. Mostly sunny, with a high near 43. West wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 20. West wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 53. Calm wind becoming northwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Mostly sunny, with a high near 55.
Friday Night
Partly cloudy, with a low around 30.
Saturday
A slight chance of rain and snow showers between 11am and 2pm, then a slight chance of rain showers after 2pm. Some thunder is also possible. Partly sunny, with a high near 52.
Saturday Night
A chance of showers. Snow level 8200 feet lowering to 7700 feet after midnight . Mostly cloudy, with a low around 28.
Sunday
A slight chance of rain and snow showers. Mostly sunny, with a high near 51.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 26.
Monday
Mostly sunny, with a high near 53.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ENE Mammoth Lakes CA
 37.67°N 118.89°W (Elev. 7671 ft)
11:30 pm PDT Apr 20, 2026
1am PDT Apr 21, 2026-6pm PDT Apr 27, 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