Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Top Stn/Summit - 11,053ft (MTH03)

Lat: 37.63059°NLon: 119.03282°WElev: 11034.0ft.

NA

15°F

-9°C

Humidity 94%
Wind Speed SW 33 MPH
Barometer NA
Dewpoint 13°F (-11°C)
Visibility NA
Wind Chill-6°F (-21°C)
Last update 12 Apr 09:40 AM PDT
Extended Forecast for

3 Miles SSW Mammoth Lakes CA

Winter Storm Warning until April 12, 11:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning until April 12, 11:00pm

    NOW until 11:00pm Sun

    Winter Storm Warning

  • Today

    High: 23 °F

    Heavy Snow
    and Windy

  • Tonight

    Tonight: A 50 percent chance of snow showers, mainly before 11pm. The snow could be heavy at times.  Mostly cloudy, with a low around 14. Windy, with a southwest wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph.  New snow accumulation of 3 to 5 inches possible.

    Low: 14 °F

    Heavy Snow
    and Windy

  • Monday

    Monday: Snow showers likely, mainly after 11am. Some thunder is also possible.  Partly sunny, with a high near 28. West wind 5 to 10 mph.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 28 °F

    Snow Showers
    Likely

  • Monday Night

    Monday Night: Partly cloudy, with a low around 16. West wind 5 to 15 mph.

    Low: 16 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 34. Southwest wind around 10 mph.

    High: 34 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 22. Southwest wind 5 to 10 mph.

    Low: 22 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

Detailed Forecast

Today
Snow showers, mainly after 11am. The snow could be heavy at times. Some thunder is also possible. High near 23. Windy, with a southwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. Total daytime snow accumulation of 5 to 9 inches possible.
Tonight
A 50 percent chance of snow showers, mainly before 11pm. The snow could be heavy at times. Mostly cloudy, with a low around 14. Windy, with a southwest wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph. New snow accumulation of 3 to 5 inches possible.
Monday
Snow showers likely, mainly after 11am. Some thunder is also possible. Partly sunny, with a high near 28. West wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Monday Night
Partly cloudy, with a low around 16. West wind 5 to 15 mph.
Tuesday
Sunny, with a high near 34. Southwest wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 22. Southwest wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 25.
Thursday
A slight chance of snow showers after 11am. Mostly sunny, with a high near 34.
Thursday Night
Partly cloudy, with a low around 16.
Friday
Sunny, with a high near 36.
Friday Night
Mostly clear, with a low around 22.
Saturday
Sunny, with a high near 42.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Mammoth Lakes CA
 37.59°N 119.01°W (Elev. 9957 ft)
4:30 am PDT Apr 12, 2026
9am PDT Apr 12, 2026-6pm PDT Apr 18, 2026
 
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