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.

Clear. Low temperature around 53F. Dew point will be around 50F with an average humidity of 69%. Winds will be 2 mph from the W.

Sunny. High temperature around 82F. Dew point will be around 52F with an average humidity of 48%. Winds will be 2 mph from the NW.

Mostly clear. Low temperature around 50F. Dew point will be around 49F with an average humidity of 70%. Winds will be 2 mph from the W.

Partly cloudy. High temperature around 75F. Dew point will be around 51F with an average humidity of 55%. Winds will be 3 mph from the W.

Partly cloudy. Low temperature around 45F. Dew point will be around 46F with an average humidity of 77%. Winds will be 3 mph from the W.