10-Day Weather Forecast - Port Costa, CA

Partly cloudy in the morning then becoming sunny. Highs near 60. Northeast winds 5 to 10 mph.

Mostly clear. Lows in the upper 30s. Light winds.

Partly cloudy in the morning then becoming sunny. Highs near 60. Northeast winds around 5 mph.

Mostly clear. Lows around 40.

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

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

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

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

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

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

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

Mostly clear. Low temperature around 43F. Dew point will be around 42F with an average humidity of 81%. Winds will be 4 mph from the E.

Sunny. High temperature around 61F. Dew point will be around 42F with an average humidity of 64%. Winds will be 6 mph from the E.

Mostly clear. Low temperature around 43F. Dew point will be around 43F with an average humidity of 84%. Winds will be 3 mph from the E.

Mostly sunny. High temperature around 58F. Dew point will be around 43F with an average humidity of 69%. Winds will be 4 mph from the E.

Mostly cloudy. Low temperature around 43F. Dew point will be around 43F with an average humidity of 86%. Winds will be 1 mph from the S.

Sunny. High temperature around 54F. Dew point will be around 41F with an average humidity of 69%. Winds will be 2 mph from the E.

Clear. Low temperature around 40F. Dew point will be around 41F with an average humidity of 87%. Winds will be 1 mph from the E.