10-Day Weather Forecast - Port Costa, CA

Partly cloudy in the morning then becoming sunny. Highs in the mid 50s to lower 60s. Northeast winds 5 to 10 mph.

Mostly clear. Lows around 40. Light winds.

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

Mostly clear. Lows around 40. Northeast winds around 5 mph.

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

Mostly clear. Lows in the lower 40s. Highs in the lower 60s.

Mostly clear. Lows in the lower 40s. Highs in the lower 60s.

Mostly clear. Lows in the lower 40s. Highs in the lower 60s.

Partly cloudy. Highs in the lower 60s. Lows in the lower 40s.

Partly cloudy. Highs in the lower 60s. Lows in the lower 40s.

Partly cloudy. Highs in the lower 60s. Lows in the lower 40s.

Partly cloudy. Highs in the lower 60s. Lows in the lower 40s.

Partly cloudy. Highs in the lower 60s. Lows in the lower 40s.

Mostly clear. Low temperature around 44F. Dew point will be around 42F with an average humidity of 84%. Winds will be 3 mph from the E.

Mostly sunny. High temperature around 56F. Dew point will be around 42F with an average humidity of 68%. Winds will be 3 mph from the E.

Clear. Low temperature around 42F. Dew point will be around 43F with an average humidity of 87%. Winds will be 2 mph from the SE.

Sunny. High temperature around 54F. Dew point will be around 40F with an average humidity of 68%. Winds will be 2 mph from the E.

Mostly clear. Low temperature around 42F. Dew point will be around 41F with an average humidity of 85%. Winds will be 1 mph from the E.