10-Day Weather Forecast - Portola Valley, CA

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

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

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

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

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

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

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

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

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

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

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

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

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

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.

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.

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.

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.

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.

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.

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.