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

DW7094 Mill Valley (D7094)

Lat: 37.91333°NLon: 122.54833°WElev: 190.0ft.

NA

N/A

Humidity NA
Wind Speed NA NA MPH
Barometer 29.66 in (1004.4 mb)
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

Tamalpais-homestead Valley CA

Flood Watch December 25, 06:39am until December 26, 10:00pm
Wind Advisory December 25, 06:39am until December 25, 10:00am
Click here for hazard details and duration
Flood Watch
...
  •  
    Flood Watch December 25, 06:39am until December 26, 10:00pm
    Wind Advisory December 25, 06:39am until December 25, 10:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Christmas Day

    High: 55 °F

    Severe
    Thunderstorms
    and Breezy

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 10pm, then rain likely after 10pm. Some of the storms could be severe. Low around 49. Breezy, with a south southwest wind 18 to 25 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Severe
    Thunderstorms
    and Breezy
    then Rain
    Likely

  • Friday

    Friday: Rain. High near 54. South southwest wind around 15 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 44. West northwest wind around 9 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain. Mostly sunny, with a high near 53. North wind around 8 mph.

    High: 53 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Christmas Day
Showers and possibly a thunderstorm before 7am, then rain between 7am and 10am, then showers and possibly a thunderstorm after 10am. Some of the storms could be severe. High near 55. Breezy, with a southwest wind 21 to 23 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and possibly a thunderstorm before 10pm, then rain likely after 10pm. Some of the storms could be severe. Low around 49. Breezy, with a south southwest wind 18 to 25 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 54. South southwest wind around 15 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 44. West northwest wind around 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 20 percent chance of rain. Mostly sunny, with a high near 53. North wind around 8 mph.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 53.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Mostly cloudy, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tamalpais-homestead Valley CA
 37.89°N 122.53°W (Elev. 174 ft)
Last Update:
12:27 am PST Dec 25, 2025
Forecast Valid:
6am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation