| National Weather Service Forecast for:
3 Miles WNW Portola Valley CA Issued by: National Weather Service San Francisco Bay Area/Monterey, CA |
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| Updated: 12:46 am PDT Aug 20, 2026 | ||||||||||||||||||
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| Overnight |
Partly cloudy, with a low around 56. Calm wind. |
| Thursday |
Partly sunny, with a high near 76. Calm wind becoming west northwest around 5 mph in the afternoon. |
| Thursday Night |
Mostly cloudy, with a low around 55. West southwest wind around 5 mph becoming calm in the evening. |
| Friday |
Mostly sunny, with a high near 74. Calm wind becoming northwest around 5 mph in the afternoon. |
| Friday Night |
Mostly clear, with a low around 54. West northwest wind 5 to 7 mph. |
| Saturday |
Sunny, with a high near 76. |
| Saturday Night |
Mostly clear, with a low around 54. |
| Sunday |
Mostly sunny, with a high near 77. |
| Sunday Night |
Partly cloudy, with a low around 55. |
| Monday |
Mostly sunny, with a high near 75. |
| Monday Night |
Partly cloudy, with a low around 54. |
| Tuesday |
Mostly sunny, with a high near 76. |
| Tuesday Night |
Partly cloudy, with a low around 54. |
| Wednesday |
Mostly sunny, with a high near 78. |
Forecast from NOAA-NWS for 3 Miles WNW Portola Valley CA.
