10-Day Weather Forecast - Saint Helena, CA

Mostly cloudy. Highs in the 70s to lower 80s. West winds up to 5 mph increasing to 10 to 15 mph in the afternoon.

Mostly cloudy. A slight chance of rain after midnight. Lows in the 40s to mid 50s. West winds 5 to 15 mph.

Mostly cloudy. A chance of rain. Highs in the 60s. West winds 5 to 15 mph. Chance of rain 40 percent.

Mostly cloudy. A chance of rain. Patchy fog after midnight. Lows in the mid 40s to lower 50s. Southwest winds 5 to 15 mph. Chance of rain 40 percent.

Mostly cloudy. A chance of rain. Highs in the 50s to upper 60s.

Rain likely. Lows in the 40s to lower 50s.

Partly cloudy in the morning then becoming sunny. A slight chance of rain. Highs in the 60s.

Mostly clear. Lows in the 30s to upper 40s.

Clear. Highs in the upper 60s to lower 80s. Lows in the 40s to lower 50s.

Clear. Highs in the upper 60s to lower 80s. Lows in the 40s to lower 50s.

Clear. Highs in the upper 60s to lower 80s. Lows in the 40s to lower 50s.

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

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

Mostly clear. Low temperature around 45F. Dew point will be around 44F with an average humidity of 71%. Winds will be 2 mph from the SW.

Sunny. High temperature around 75F. Dew point will be around 45F with an average humidity of 49%. Winds will be 2 mph from the W.

Clear. Low temperature around 44F. Dew point will be around 45F with an average humidity of 77%. Winds will be 3 mph from the SW.

Sunny. High temperature around 73F. Dew point will be around 44F with an average humidity of 52%. Winds will be 4 mph from the NW.

Clear. Low temperature around 42F. Dew point will be around 43F with an average humidity of 75%. Winds will be 3 mph from the W.