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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

ROCK CREEK (RCEC1)

Lat: 37.55983°NLon: 118.67841°WElev: 7103.0ft.

NA

32°F

0°C

Humidity 100%
Wind Speed ESE 5 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill27°F (-3°C)
Last update 24 Dec 07:04 AM PST
Extended Forecast for

16 Miles SE Mammoth Lakes CA

Winter Storm Warning until December 26, 10:00am
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning until December 26, 10:00am

    NOW until 10:00am Fri

    Winter Storm Warning

  • Today

    High: 39 °F

    Heavy Snow
    and Very
    Windy

  • Tonight

    Tonight: Snow. The snow could be heavy at times. Low around 19. Very windy, with a south wind 35 to 40 mph, with gusts as high as 60 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

    Low: 19 °F

    Heavy Snow
    and Very
    Windy

  • Christmas Day

    Christmas Day: Snow. The snow could be heavy at times. High near 34. Very windy, with a south wind 40 to 45 mph, with gusts as high as 65 mph. Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.

    High: 34 °F

    Heavy Snow
    and Very
    Windy

  • Thursday Night

    Thursday Night: Snow before 10pm, then snow showers between 10pm and 4am, then snow after 4am. The snow could be heavy at times. Some thunder is also possible. Low around 18. Very windy, with a south wind 45 to 55 mph, with gusts as high as 85 mph. Chance of precipitation is 100%. New snow accumulation of 10 to 14 inches possible.

    Low: 18 °F

    Heavy Snow
    and Very
    Windy

  • Friday

    Friday: Snow. The snow could be heavy at times. High near 32. Very windy, with a southwest wind 35 to 40 mph decreasing to 25 to 30 mph in the afternoon. Winds could gust as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    High: 32 °F

    Heavy Snow
    and Very
    Windy

  • Friday Night

    Friday Night: Snow likely, mainly before 10pm. Mostly cloudy, with a low around 7. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 7 °F

    Snow Likely
    and Breezy

  • Saturday

    Saturday: A 30 percent chance of snow. Partly sunny, with a high near 31. New snow accumulation of less than a half inch possible.

    High: 31 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A slight chance of snow. Mostly clear, with a low around 7. Breezy.

    Low: 7 °F

    Slight Chance
    Snow and
    Breezy

Detailed Forecast

Today
Snow. The snow could be heavy at times. High near 39. Very windy, with a south wind 35 to 45 mph, with gusts as high as 65 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 16 to 22 inches possible.
Tonight
Snow. The snow could be heavy at times. Low around 19. Very windy, with a south wind 35 to 40 mph, with gusts as high as 60 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.
Christmas Day
Snow. The snow could be heavy at times. High near 34. Very windy, with a south wind 40 to 45 mph, with gusts as high as 65 mph. Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.
Thursday Night
Snow before 10pm, then snow showers between 10pm and 4am, then snow after 4am. The snow could be heavy at times. Some thunder is also possible. Low around 18. Very windy, with a south wind 45 to 55 mph, with gusts as high as 85 mph. Chance of precipitation is 100%. New snow accumulation of 10 to 14 inches possible.
Friday
Snow. The snow could be heavy at times. High near 32. Very windy, with a southwest wind 35 to 40 mph decreasing to 25 to 30 mph in the afternoon. Winds could gust as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 7. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 31. New snow accumulation of less than a half inch possible.
Saturday Night
A slight chance of snow. Mostly clear, with a low around 7. Breezy.
Sunday
Sunny, with a high near 33. Breezy.
Sunday Night
Mostly clear, with a low around 11. Breezy.
Monday
Sunny, with a high near 38.
Monday Night
Mostly clear, with a low around 16.
Tuesday
A slight chance of snow. Mostly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SE Mammoth Lakes CA
 37.49°N 118.76°W (Elev. 10397 ft)
Last Update:
9:15 am PST Dec 24, 2025
Forecast Valid:
9am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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