10-Day Weather Forecast - Portola Valley, CA

Mostly cloudy. Patchy fog in the morning. Highs in the mid 60s. Northeast winds around 5 mph.

Mostly cloudy. Lows in the upper 40s. Northeast winds up to 5 mph.

Mostly cloudy. Highs in the lower 60s. Northeast winds around 5 mph. . . Becoming northwest in the afternoon.

Mostly cloudy. Lows in the upper 40s.

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

Partly cloudy. Patchy fog. Lows in the upper 40s. Highs in the upper 50s to mid 60s.

Partly cloudy. Patchy fog. Lows in the upper 40s. Highs in the upper 50s to mid 60s.

Partly cloudy. Patchy fog. Lows in the upper 40s. Highs in the upper 50s to mid 60s.

Partly cloudy. Patchy fog. Lows in the upper 40s. Highs in the upper 50s to mid 60s.

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 40s.

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

Partly cloudy. Low temperature around 39F. Dew point will be around 44F with an average humidity of 92%. Winds will be 1 mph from the SE.

Partly cloudy. High temperature around 62F. Dew point will be around 44F with an average humidity of 71%. Winds will be 1 mph from the W.

Partly cloudy. Low temperature around 39F. Dew point will be around 42F with an average humidity of 93%. Winds will be 2 mph from the SE.

Partly cloudy. High temperature around 59F. Dew point will be around 45F with an average humidity of 71%. Winds will be 1 mph from the S.

Partly cloudy. Low temperature around 40F. Dew point will be around 43F with an average humidity of 95%. Winds will be 2 mph from the S.

Cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 58F. Dew point will be around 46F with an average humidity of 76%. Winds will be 2 mph from the S.

Partly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 39F. Dew point will be around 43F with an average humidity of 96%. Winds will be 2 mph from the W.