Portola Valley, California | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Monday
    Mostly Cloudy
    75°
    Forecast night icon
    Night
    Partly Cloudy
    44°
    Monday 5/13
    Day
    75°
    Mostly Cloudy
    Forecast day icon
    Night
    44°
    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
    76°
    Forecast night icon
    Night
    Mostly Cloudy
    47°
    Tuesday 5/14
    Day
    76°
    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 around 5 mph. . . Becoming west 5 to 15 mph in the afternoon.
    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
    48°
    Wednesday 5/15
    Day
    77°
    Mostly Cloudy
    Forecast day icon
    Night
    48°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming sunny. Highs in the 60s to upper 70s. Southwest winds around 5 mph increasing to west 10 to 20 mph in the afternoon.
    Night Details
    Mostly clear. Lows in the mid 50s.
  • Forecast day icon
    Thursday
    Mostly Sunny
    78°
    Forecast night icon
    Night
    Mostly Clear
    48°
    Thursday 5/16
    Day
    78°
    Mostly Sunny
    Forecast day icon
    Night
    48°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly clear. Highs in the 70s. Lows in the mid 50s.
    Night Details
    Mostly clear. Highs in the 70s. Lows in the mid 50s.
  • Forecast day icon
    Friday
    Mostly Cloudy
    72°
    Forecast night icon
    Night
    Partly Cloudy
    47°
    Friday 5/17
    Day
    72°
    Mostly Cloudy
    Forecast day icon
    Night
    47°
    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
    74°
    Forecast night icon
    Night
    Partly Cloudy
    47°
    Saturday 5/18
    Day
    74°
    Partly Cloudy
    Forecast day icon
    Night
    47°
    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
    69°
    Forecast night icon
    Night
    Mostly Cloudy
    47°
    Sunday 5/19
    Day
    69°
    Partly Cloudy
    Forecast day icon
    Night
    47°
    Mostly Cloudy
    Forecast night icon
    Day Details
    Partly cloudy. Highs in the upper 60s to mid 70s. Lows in the mid 50s.
    Night Details
    Mostly cloudy. Low temperature around 47F. Dew point will be around 48F with an average humidity of 88%. Winds will be 4 mph from the W.
  • Forecast day icon
    Monday
    Partly Cloudy
    73°
    Forecast night icon
    Night
    Partly Cloudy
    46°
    Monday 5/20
    Day
    73°
    Partly Cloudy
    Forecast day icon
    Night
    46°
    Partly Cloudy
    Forecast night icon
    Day Details
    Partly cloudy. High temperature around 73F. Dew point will be around 54F with an average humidity of 70%. Winds will be 5 mph from the W.
    Night Details
    Partly cloudy. Low temperature around 46F. Dew point will be around 48F with an average humidity of 83%. Winds will be 6 mph from the W.
  • Forecast day icon
    Tuesday
    Mostly Cloudy
    74°
    Forecast night icon
    Night
    Clear
    45°
    Tuesday 5/21
    Day
    74°
    Mostly Cloudy
    Forecast day icon
    Night
    45°
    Clear
    Forecast night icon
    Day Details
    Mostly cloudy. High temperature around 74F. Dew point will be around 53F with an average humidity of 64%. Winds will be 8 mph from the NW.
    Night Details
    Clear. Low temperature around 45F. Dew point will be around 47F with an average humidity of 79%. Winds will be 8 mph from the NW.
  • Forecast day icon
    Wednesday
    Sunny
    75°
    Forecast night icon
    Night
    Clear
    46°
    Wednesday 5/22
    Day
    75°
    Sunny
    Forecast day icon
    Night
    46°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 75F. Dew point will be around 52F with an average humidity of 61%. Winds will be 9 mph from the NW.
    Night Details
    Clear. Low temperature around 46F. Dew point will be around 47F with an average humidity of 79%. Winds will be 9 mph from the NW.