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

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

LOS ALTOS (LOAC1)

Lat: 37.35472°NLon: 122.14167°WElev: 539.0ft.

NA

41°F

5°C

Humidity 100%
Wind Speed WSW 2 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 07 Dec 06:10 AM PST
Extended Forecast for

2 Miles N Portola Valley CA

Coastal Flood Advisory December 7, 07:11am until December 7, 03:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory December 7, 07:11am until December 7, 03:00pm

    NOW until 3:00pm Sun

    Coastal Flood Advisory

  • Today

    High: 63 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, mostly clear, with a low around 43. West northwest wind around 6 mph becoming calm in the evening.

    Low: 43 °F

    Mostly Clear
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog between 8am and 9am. Otherwise, sunny, with a high near 65. Calm wind becoming north 5 to 7 mph in the morning.

    High: 65 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 45. West northwest wind 3 to 6 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 65. Calm wind becoming north 5 to 9 mph in the morning.

    High: 65 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Today
Patchy fog between 8am and 9am. Otherwise, mostly sunny, with a high near 63. Calm wind becoming north 5 to 9 mph in the morning.
Tonight
Patchy fog after 1am. Otherwise, mostly clear, with a low around 43. West northwest wind around 6 mph becoming calm in the evening.
Monday
Patchy fog between 8am and 9am. Otherwise, sunny, with a high near 65. Calm wind becoming north 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 45. West northwest wind 3 to 6 mph.
Tuesday
Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 65. Calm wind becoming north 5 to 9 mph in the morning.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 68.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 69.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 47.
Saturday
Sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Portola Valley CA
 37.39°N 122.23°W (Elev. 397 ft)
Last Update:
2:33 am PST Dec 7, 2025
Forecast Valid:
7am PST Dec 7, 2025-6pm PST Dec 13, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation