| NWS Forecast for: 3 Miles S Portola Valley CA Issued by: National Weather Service San Francisco Bay Area/Monterey, CA Last Update: 1:26 pm PDT Sep 4, 2026 |  |
| Tonight: Mostly clear, with a low around 54. West northwest wind 5 to 7 mph. Saturday: Sunny, with a high near 67. West wind 3 to 8 mph. Saturday Night: Partly cloudy, with a low around 55. West wind 5 to 7 mph. Sunday: Sunny, with a high near 63. West northwest wind 6 to 8 mph. Sunday Night: Mostly clear, with a low around 54. West northwest wind 6 to 9 mph, with gusts as high as 18 mph. Labor Day: Sunny, with a high near 77. Monday Night: Clear, with a low around 66. Tuesday: Sunny, with a high near 79. Tuesday Night: A slight chance of rain after 11pm. Partly cloudy, with a low around 67. Wednesday: A slight chance of rain. Partly sunny, with a high near 75. Wednesday Night: A chance of rain. Mostly cloudy, with a low around 70. Thursday: A slight chance of rain. Mostly sunny, with a high near 75. Thursday Night: Partly cloudy, with a low around 64. Friday: A slight chance of rain. Mostly sunny, with a high near 70. | |
| 3 Miles S Portola Valley CA 37.33°N 122.21°W (Elev. 2231 ft) | |
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