Portola Valley, California | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Partly Cloudy
    47°
    Sunday 5/12
    Forecast night icon
    47°
    Partly Cloudy
    Hourly
    Night Details
    Partly cloudy late in the evening then becoming mostly cloudy. Lows in the lower 50s. West winds 5 to 15 mph.
  • Forecast day icon
    Monday
    Mostly Cloudy
    75°
    Forecast night icon
    Night
    Partly Cloudy
    46°
    Monday 5/13
    Day
    75°
    Mostly Cloudy
    Forecast day icon
    Night
    46°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming sunny. Highs in the 60s to mid 70s. West winds 5 to 10 mph increasing to 10 to 20 mph in the afternoon.
    Night Details
    Partly cloudy. Lows in the lower 50s. West winds 10 to 20 mph. . . Becoming 5 to 10 mph after midnight.
  • Forecast day icon
    Tuesday
    Mostly Cloudy
    75°
    Forecast night icon
    Night
    Mostly Cloudy
    47°
    Tuesday 5/14
    Day
    75°
    Mostly Cloudy
    Forecast day icon
    Night
    47°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming sunny. Highs in the 60s to upper 70s. Southwest winds 5 to 15 mph.
    Night Details
    Mostly clear in the evening then becoming mostly cloudy. Lows in the lower 50s. West winds 10 to 20 mph. . . Becoming southwest 5 to 10 mph after midnight.
  • Forecast day icon
    Wednesday
    Mostly Cloudy
    77°
    Forecast night icon
    Night
    Mostly Clear
    47°
    Wednesday 5/15
    Day
    77°
    Mostly Cloudy
    Forecast day icon
    Night
    47°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming sunny. Highs in the 60s to upper 70s.
    Night Details
    Mostly clear. Lows in the mid 50s. Highs in the 70s.
  • Forecast day icon
    Thursday
    Mostly Sunny
    77°
    Forecast night icon
    Night
    Mostly Clear
    47°
    Thursday 5/16
    Day
    77°
    Mostly Sunny
    Forecast day icon
    Night
    47°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly clear. Lows in the mid 50s. Highs in the 70s.
    Night Details
    Mostly clear. Lows in the mid 50s. Highs in the 70s.
  • Forecast day icon
    Friday
    Mostly Cloudy
    74°
    Forecast night icon
    Night
    Partly Cloudy
    46°
    Friday 5/17
    Day
    74°
    Mostly Cloudy
    Forecast day icon
    Night
    46°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming sunny. Highs in the 60s to upper 70s.
    Night Details
    Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s.
  • Forecast day icon
    Saturday
    Partly Cloudy
    72°
    Forecast night icon
    Night
    Partly Cloudy
    48°
    Saturday 5/18
    Day
    72°
    Partly Cloudy
    Forecast day icon
    Night
    48°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy. Highs in the upper 60s to mid 70s. Lows in the mid 50s.
    Night Details
    Partly cloudy. Highs in the upper 60s to mid 70s. Lows in the mid 50s.
  • Forecast day icon
    Sunday
    Partly Cloudy
    71°
    Forecast night icon
    Night
    Partly Cloudy
    47°
    Sunday 5/19
    Day
    71°
    Partly Cloudy
    Forecast day icon
    Night
    47°
    Partly Cloudy
    Forecast night icon
    Day Details
    Partly cloudy. Highs in the upper 60s to mid 70s. Lows in the mid 50s.
    Night Details
    Partly cloudy. Low temperature around 47F. Dew point will be around 48F with an average humidity of 84%. Winds will be 4 mph from the W.
  • Forecast day icon
    Monday
    Mostly Cloudy
    71°
    Forecast night icon
    Night
    Clear
    45°
    Monday 5/20
    Day
    71°
    Mostly Cloudy
    Forecast day icon
    Night
    45°
    Clear
    Forecast night icon
    Day Details
    Mostly cloudy. High temperature around 71F. Dew point will be around 52F with an average humidity of 67%. Winds will be 6 mph from the W.
    Night Details
    Clear. Low temperature around 45F. Dew point will be around 46F with an average humidity of 82%. Winds will be 6 mph from the W.
  • Forecast day icon
    Tuesday
    Sunny
    73°
    Forecast night icon
    Night
    Clear
    45°
    Tuesday 5/21
    Day
    73°
    Sunny
    Forecast day icon
    Night
    45°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 73F. Dew point will be around 51F with an average humidity of 62%. Winds will be 7 mph from the NW.
    Night Details
    Clear. Low temperature around 45F. Dew point will be around 46F with an average humidity of 80%. Winds will be 6 mph from the W.