10-Day Weather Forecast - Portola Valley, CA

Partly cloudy in the morning then becoming sunny. Highs in the upper 70s to mid 80s. West winds 5 to 15 mph.

Mostly clear in the evening then becoming partly cloudy. Lows in the lower 60s. West winds 10 to 20 mph.. becoming east 5 to 10 mph after midnight.

Partly cloudy. Highs in the mid 70s to lower 80s. West winds 5 to 10 mph increasing to 10 to 20 mph in the afternoon.

Mostly cloudy. Lows in the upper 50s to mid 60s. West winds 10 to 20 mph.

Cloudy in the morning then becoming partly cloudy. Highs in the 70s.

Mostly clear. Lows in the upper 50s.

Partly cloudy in the morning then becoming sunny. Highs in the 60s to mid 70s.

Mostly clear. Lows in the upper 50s.

Mostly cloudy in the morning then becoming partly cloudy. Highs in the 60s to mid 70s.

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s.

Mostly cloudy in the morning then becoming partly cloudy. Highs in the mid 60s to lower 70s.

Partly cloudy. Lows in the upper 50s.

Partly cloudy. Highs in the 60s to mid 70s.

Clear. Low temperature around 51F. Dew point will be around 53F with an average humidity of 89%. Winds will be 2 mph from the SW.

Mostly sunny. High temperature around 73F. Dew point will be around 55F with an average humidity of 67%. Winds will be 2 mph from the W.

Mostly clear. Low temperature around 52F. Dew point will be around 53F with an average humidity of 86%. Winds will be 2 mph from the SW.

Sunny. High temperature around 75F. Dew point will be around 56F with an average humidity of 64%. Winds will be 2 mph from the W.

Clear. Low temperature around 54F. Dew point will be around 53F with an average humidity of 82%. Winds will be 2 mph from the SW.