10-Day Weather Forecast - Port Costa, CA

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

Mostly clear except patchy fog after midnight. Lows in the lower 40s. Northeast winds around 5 mph in the evening. . . Becoming light.

Partly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the mid 60s. Northeast winds 5 to 10 mph.

Mostly clear except patchy fog after midnight. Lows in the lower 40s. East winds around 5 mph.

Partly cloudy. Highs in the upper 60s.

Mostly cloudy. Lows in the upper 40s. Highs in the mid 60s.

Mostly cloudy. Lows in the upper 40s. Highs in the mid 60s.

Mostly cloudy. Lows in the upper 40s. Highs in the mid 60s.

Mostly cloudy in the morning then becoming partly cloudy. Highs in the mid 60s.

Mostly cloudy. A slight chance of rain. Lows in the upper 40s.

Mostly cloudy. Patchy fog. A chance of rain. Highs in the lower 60s.

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

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

Mostly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 43F. Dew point will be around 44F with an average humidity of 93%. Winds will be 5 mph from the SW.

Partly cloudy. High temperature around 53F. Dew point will be around 44F with an average humidity of 77%. Winds will be 3 mph from the SW.

Partly cloudy. Low temperature around 40F. Dew point will be around 41F with an average humidity of 90%. Winds will be 3 mph from the SW.

Partly cloudy with a slight chance of rain. Chance of precipitation 25%. High temperature around 53F. Dew point will be around 42F with an average humidity of 75%. Winds will be 1 mph from the W.

Clear. Low temperature around 40F. Dew point will be around 41F with an average humidity of 91%. Winds will be 3 mph from the SW.