10-Day Weather Forecast - Saint Helena, CA

Mostly cloudy. Patchy dense fog in the morning. Highs in the upper 50s to mid 60s. Southwest winds 5 to 15 mph.

Mostly cloudy. Patchy fog. A chance of showers. Lows in the upper 40s to mid 50s. Southwest winds 5 to 15 mph.

Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. A chance of showers in the morning then a slight chance of showers in the afternoon. Highs in the 60s. West winds 5 to 10 mph. Chance of showers 40 percent.

Mostly clear in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the 40s to lower 50s. Northwest winds 5 to 10 mph.

Mostly cloudy in the morning then becoming sunny. Patchy fog. Highs in the 60s.

Partly cloudy. Lows in the mid 40s to lower 50s. Highs in the 60s.

Partly cloudy. Lows in the mid 40s to lower 50s. Highs in the 60s.

Clear. Lows in the 40s.

Sunny in the morning then becoming partly cloudy. Highs in the 60s.

Partly cloudy. Lows in the lower 40s to mid 50s. Highs in the 60s to mid 70s.

Partly cloudy. Lows in the lower 40s to mid 50s. Highs in the 60s to mid 70s.

Partly cloudy. Lows in the lower 40s to mid 50s. Highs in the 60s to mid 70s.

Partly cloudy. Lows in the lower 40s to mid 50s. Highs in the 60s to mid 70s.

Mostly clear. Low temperature around 51F. Dew point will be around 48F with an average humidity of 78%. Winds will be 2 mph from the N.

Sunny. High temperature around 73F. Dew point will be around 52F with an average humidity of 59%. 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 79%. Winds will be 3 mph from the N.

Mostly sunny. High temperature around 71F. Dew point will be around 48F with an average humidity of 56%. Winds will be 4 mph from the N.

Clear. Low temperature around 47F. Dew point will be around 44F with an average humidity of 72%. Winds will be 3 mph from the N.