10-Day Weather Forecast - Saint Helena, CA

Sunny. Highs in the 60s to lower 70s. East winds 5 to 10 mph.

Mostly cloudy. Lows in the 40s to lower 50s. Northeast winds up to 5 mph. . . Becoming north after midnight.

Mostly cloudy in the morning then becoming sunny. Highs in the 60s. North winds up to 5 mph. . . Becoming southwest in the afternoon.

Partly cloudy. Areas of fog. Lows in the 40s to lower 50s. Northwest winds up to 5 mph.

Mostly cloudy in the morning then becoming partly cloudy. Areas of fog. Highs in the 60s.

Partly cloudy in the evening then becoming mostly cloudy. Areas of fog. Lows in the 40s to lower 50s.

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

Mostly cloudy. Patchy fog. A chance of rain. Lows in the 40s to lower 50s.

Mostly cloudy. Areas of fog. A chance of rain. Highs in the mid 50s to lower 60s.

Mostly cloudy. A chance of rain. Lows in the 30s to upper 40s. Highs in the 50s.

Mostly cloudy. A chance of rain. Lows in the 30s to upper 40s. Highs in the 50s.

Mostly cloudy. Areas of fog. A chance of rain. Lows in the 30s to mid 40s. Highs in the 50s to lower 60s.

Mostly cloudy. Areas of fog. A chance of rain. Lows in the 30s to mid 40s. Highs in the 50s to lower 60s.

Clear. Low temperature around 36F. Dew point will be around 37F with an average humidity of 89%. Winds will be 2 mph from the N.

Sunny. High temperature around 63F. Dew point will be around 41F with an average humidity of 63%. Winds will be 2 mph from the W.

Mostly clear. Low temperature around 37F. Dew point will be around 38F with an average humidity of 86%. Winds will be 2 mph from the NW.

Partly cloudy. High temperature around 61F. Dew point will be around 42F with an average humidity of 64%. Winds will be 2 mph from the W.

Partly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 38F. Dew point will be around 40F with an average humidity of 90%. Winds will be 3 mph from the SW.