Portola Valley, California Weather
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Weather Forecast for Portola Valley, California : San Mateo County
Issued: 11:36 am PDT Jul 4, 2025 Latitude: 37.3841067 Longitude: -122.2352443 View on Google Maps

MouseOver for Detail Forecast
Independence Day Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Sunny on Independence Day Mostly Clear on Tonight Sunny on Saturday Mostly Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday Mostly Sunny on Wednesday Sunny on Thursday
High: 74°F Low: 48°F High: 75°F High: 78°F High: 80°F High: 80°F High: 84°F High: 87°F
  Low: 50°F Low: 49°F Low: 52°F Low: 52°F Low: 53°F  
Sunny Mostly Clear Sunny Mostly Sunny Sunny Mostly Sunny Mostly Sunny Sunny
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Current Conditions at
PALO ALTO - (KPAO)
68°
Clear
as of 11:47 AM PDST
Rel. Humidity: 64%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
9 MPH
020° North
Cloud Level(s): Clear
Current Conditions at
SAN CARLOS - (KSQL)
72°
Clear
as of 11:47 AM PDST
Rel. Humidity: 43%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
9 MPH
240° Southwest
Cloud Level(s): Clear
Current Conditions at
MOUNTAIN VIEW NAS - (KNUQ)
70°
Clear
as of 11:55 AM PDST
Rel. Humidity: 52%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
7 MPH
Cloud Level(s): Clear
Current Conditions at
SAN JOSE INTL - (KSJC)
75°
Clear
as of 11:53 AM PDST
Rel. Humidity: 36%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
6 MPH
Cloud Level(s): Clear
Sunny on Independence Day Independence Day... Sunny, with a high near 74. West wind 8 to 14 mph.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 48. West southwest wind 8 to 10 mph.
Sunny on Saturday Saturday... Sunny, with a high near 75. Light west southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 18 mph.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 50. West southwest wind 8 to 15 mph, with gusts as high as 18 mph.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 78. Light and variable wind becoming southwest 8 to 13 mph in the afternoon.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 49.
Sunny on Monday Monday... Sunny, with a high near 80.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 52. Breezy.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 80.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 52.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 84.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 53.
Sunny on Thursday Thursday... Sunny, with a high near 87.
Current Radar Image


Sun Almanac for Portola Valley, California
Sunrise: 05:54 AM
Sunset: 8:33 PM
Civil Sunrise:05:23 AM
Civil Sunset: 9:04 PM
Nautical Sunrise: 04:45 AM
Nautical Sunset: 9:42 PM
Astro Sunrise: 04:02 AM
Astro Sunset: 10:25 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.