10-Day Weather Forecast - Saint Helena, CA

Sunny. Patchy dense fog in the morning. Highs in the 70s to lower 80s. Northwest winds 5 to 10 mph.

Mostly clear in the evening then becoming partly cloudy. Lows in the lower 40s to mid 50s. Northwest winds 5 to 10 mph.

Mostly cloudy. Highs in the upper 60s to lower 80s. Northwest winds 5 to 10 mph.

Mostly cloudy. Lows in the 40s to mid 50s.

Mostly clear. Highs in the lower 70s to mid 80s. Lows in the 40s to upper 50s.

Mostly clear. Highs in the lower 70s to mid 80s. Lows in the 40s to upper 50s.

Mostly cloudy. Highs in the mid 70s to upper 80s. Lows in the 50s to lower 60s.

Mostly cloudy. Highs in the mid 70s to upper 80s. Lows in the 50s to lower 60s.

Partly cloudy. Highs in the upper 70s to lower 90s. Lows in the 50s to lower 60s.

Partly cloudy. Highs in the upper 70s to lower 90s. Lows in the 50s to lower 60s.

Sunny. Highs in the upper 70s to lower 90s.

Clear. Low temperature around 56F. Dew point will be around 54F with an average humidity of 69%. Winds will be 2 mph from the SE.

Sunny. High temperature around 84F. Dew point will be around 55F with an average humidity of 57%. Winds will be 2 mph from the S.

Partly cloudy. Low temperature around 53F. Dew point will be around 52F with an average humidity of 69%. Winds will be 2 mph from the S.

Mostly sunny. High temperature around 80F. Dew point will be around 54F with an average humidity of 55%. Winds will be 2 mph from the SW.

Partly cloudy. Low temperature around 52F. Dew point will be around 50F with an average humidity of 68%. Winds will be 3 mph from the SW.

Mostly sunny. High temperature around 78F. Dew point will be around 52F with an average humidity of 56%. Winds will be 3 mph from the NW.

Clear. Low temperature around 49F. Dew point will be around 47F with an average humidity of 67%. Winds will be 4 mph from the W.