10-Day Weather Forecast - Saint Helena, CA

Sunny. Patchy dense fog in the morning. Highs in the 50s to upper 60s. Northeast winds 5 to 10 mph. . . Becoming southeast in the afternoon.

Mostly clear except patchy fog. Lows in the upper 30s to lower 50s. North winds up to 5 mph.

Sunny. Patchy dense fog in the morning. Highs in the 50s to upper 60s. Northeast winds 5 to 10 mph.

Mostly clear. Lows in the upper 30s to lower 50s. Northeast winds 5 to 10 mph.

Sunny. Highs in the 50s to upper 60s.

Mostly clear. Lows in the 30s to upper 40s. Highs in the 50s to upper 60s.

Mostly clear. Lows in the 30s to upper 40s. Highs in the 50s to upper 60s.

Mostly clear. Lows in the 30s to upper 40s. Highs in the 50s to upper 60s.

Mostly clear. Lows in the 30s to upper 40s. Highs in the 50s to upper 60s.

Mostly clear in the evening then becoming partly cloudy. Lows in the 30s to upper 40s.

Partly cloudy in the morning then becoming sunny. Highs in the 50s to upper 60s.

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog. Lows in the 40s.

Mostly cloudy in the morning then becoming sunny. Highs in the 50s to upper 60s.

Mostly clear. Low temperature around 40F. Dew point will be around 43F with an average humidity of 94%. Winds will be 1 mph from the W.

Sunny. High temperature around 58F. Dew point will be around 44F with an average humidity of 74%. Winds will be 1 mph from the W.

Clear. Low temperature around 38F. Dew point will be around 42F with an average humidity of 93%. Winds will be 3 mph from the NW.

Mostly sunny. High temperature around 56F. Dew point will be around 42F with an average humidity of 77%. Winds will be 2 mph from the NW.

Clear. Low temperature around 37F. Dew point will be around 40F with an average humidity of 93%. Winds will be 2 mph from the NW.