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

Half Moon Bay Airport (KHAF)

Lat: 37.5136°NLon: 122.4996°WElev: 65.0ft.

haze

55°F

13°C

Humidity 87%
Wind Speed SSW 16 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 52°F (11°C)
Visibility 6.00 mi
Last update 26 Dec 02:15 AM PST
Extended Forecast for

Montara CA

Flood Watch December 26, 02:43am until December 26, 10:00pm
High Surf Advisory December 26, 04:00am until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
High Surf Advisory
  •  
    Flood Watch December 26, 02:43am until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Overnight

    Low: 50 °F

    Chance
    Showers and
    Breezy

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 57. Breezy, with a south wind 14 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 57 °F

    Showers
    Likely and
    Breezy

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Southwest wind around 11 mph becoming northwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers. Mostly sunny, with a high near 55. North wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 55 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43. North northeast wind around 8 mph.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

Detailed Forecast

Overnight
A 50 percent chance of showers. Mostly cloudy, with a low around 50. Breezy, with a south southwest wind 21 to 23 mph, with gusts as high as 34 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 57. Breezy, with a south wind 14 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Southwest wind around 11 mph becoming northwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 55. North wind 10 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 43. North northeast wind around 8 mph.
Sunday
Sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 56.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Sunny, with a high near 58.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 58.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 46.
New Year's Day
A chance of showers. Partly sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Montara CA
 37.55°N 122.5°W (Elev. 568 ft)
Last Update:
12:27 am PST Dec 26, 2025
Forecast Valid:
2am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation