10-Day Weather Forecast - Portola Valley, CA

Sunny. Highs in the mid 60s. Northeast winds 5 to 10 mph.

Mostly clear. Lows in the mid 40s. East winds 5 to 10 mph.

Sunny. Highs in the upper 60s. Northeast winds 5 to 10 mph.

Mostly clear. Lows in the upper 40s.

Sunny. Highs in the mid 60s.

Partly cloudy. Lows in the upper 40s. Highs in the mid 60s.

Partly cloudy. Lows in the upper 40s. Highs in the mid 60s.

Mostly clear. Lows in the mid 40s. Highs in the lower 60s.

Mostly clear. Lows in the mid 40s. Highs in the lower 60s.

Partly cloudy. Lows in the mid 40s. Highs in the lower 60s.

Partly cloudy. Lows in the mid 40s. Highs in the lower 60s.

Mostly cloudy. Low temperature around 42F. Dew point will be around 43F with an average humidity of 87%. Winds will be 2 mph from the SW.

Partly cloudy. High temperature around 56F. Dew point will be around 45F with an average humidity of 80%. Winds will be 3 mph from the SW.

Mostly clear. Low temperature around 40F. Dew point will be around 42F with an average humidity of 93%. Winds will be 3 mph from the W.

Cloudy. High temperature around 52F. Dew point will be around 44F with an average humidity of 82%. Winds will be 5 mph from the W.

Mostly clear. Low temperature around 39F. Dew point will be around 40F with an average humidity of 91%. Winds will be 4 mph from the W.

Partly cloudy. High temperature around 53F. Dew point will be around 42F with an average humidity of 77%. Winds will be 4 mph from the NW.

Clear. Low temperature around 38F. Dew point will be around 38F with an average humidity of 86%. Winds will be 3 mph from the NW.