10-Day Weather Forecast - Portola Valley, CA

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  • |42°F
    Partly Cloudy
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    Tonight

    42°F

    Partly cloudy. Lows around 50. West winds 5 to 10 mph.

    Hourly details
  • Day

    72°F

    Partly cloudy. Highs in the 60s to mid 70s. Southwest winds up to 5 mph. . . Becoming northwest in the afternoon.

    Night

    43°F

    Mostly cloudy in the evening then becoming partly cloudy. Lows around 50. West winds 5 to 10 mph.

    Hourly details
  • Weekend Weather

  • Day

    72°F

    Partly cloudy in the morning then becoming sunny. Highs in the 60s to upper 70s. West winds 5 to 10 mph.

    Night

    45°F

    Mostly clear in the evening then becoming partly cloudy. Lows in the lower 50s. West winds 5 to 15 mph.

    Hourly details
  • Day

    78°F

    Mostly cloudy in the morning then becoming partly cloudy. Highs in the 70s to mid 80s.

    Night

    50°F

    Partly cloudy. Lows in the upper 50s. Highs in the 80s.

    Hourly details
  • Day

    83°F

    Partly cloudy. Lows in the upper 50s. Highs in the 80s.

    Night

    51°F

    Clear. Lows in the upper 50s. Highs in the upper 70s to lower 90s.

    Hourly details
  • Day

    87°F

    Clear. Lows in the upper 50s. Highs in the upper 70s to lower 90s.

    Night

    53°F

    Clear. Lows in the upper 50s. Highs in the upper 70s to lower 90s.

    Hourly details
  • Day

    87°F

    Clear. Lows in the upper 50s. Highs in the upper 70s to lower 90s.

    Night

    53°F

    Mostly clear. Lows in the upper 50s. Highs in the 70s to upper 80s.

    Hourly details
  • Day

    86°F

    Mostly clear. Lows in the upper 50s. Highs in the 70s to upper 80s.

    Night

    53°F

    Mostly clear. Low temperature around 53F. Dew point will be around 49F with an average humidity of 67%. Winds will be 2 mph from the NW.

  • Day

    81°F

    Partly cloudy. High temperature around 81F. Dew point will be around 51F with an average humidity of 51%. Winds will be 2 mph from the NW.

    Night

    48°F

    Partly cloudy. Low temperature around 48F. Dew point will be around 48F with an average humidity of 72%. Winds will be 3 mph from the W.

  • Weekend Weather

  • Day

    72°F

    Partly cloudy. High temperature around 72F. Dew point will be around 49F with an average humidity of 57%. Winds will be 4 mph from the SW.

    Night

    43°F

    Partly cloudy. Low temperature around 43F. Dew point will be around 45F with an average humidity of 79%. Winds will be 4 mph from the W.

  • Day

    67°F

    Partly cloudy. High temperature around 67F. Dew point will be around 46F with an average humidity of 60%. Winds will be 6 mph from the NW.

    Night

    41°F

    Partly cloudy. Low temperature around 41F. Dew point will be around 42F with an average humidity of 80%. Winds will be 5 mph from the W.