10-Day Weather Forecast - Port Costa, CA

Partly cloudy. Highs in the lower 50s. West winds around 5 mph. . . Becoming north in the afternoon.

Mostly clear in the evening then becoming mostly cloudy. Lows in the upper 30s. Northwest winds around 5 mph.

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

Mostly clear. Areas of frost after midnight. Lows in the mid 30s. Light winds. . . Becoming northeast around 5 mph after midnight.

Sunny. Highs in the upper 40s to mid 50s.

Mostly clear. Lows in the upper 30s.

Mostly cloudy in the morning then becoming sunny. Highs in the upper 40s to mid 50s.

Mostly clear. Lows in the upper 30s.

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

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

Cloudy. A chance of rain. Highs in the lower 50s. Lows in the mid 40s.

Cloudy. A chance of rain. Highs in the lower 50s. Lows in the mid 40s.

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

Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 47F. Dew point will be around 46F with an average humidity of 94%. Winds will be 2 mph from the S.

Partly cloudy with a slight chance of rain. Chance of precipitation 25%. High temperature around 51F. Dew point will be around 46F with an average humidity of 85%. Winds will be 1 mph from the E.

Mostly clear. Low temperature around 45F. Dew point will be around 44F with an average humidity of 90%. Winds will be 1 mph from the S.

Partly cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 50F. Dew point will be around 44F with an average humidity of 84%. Winds will be 1 mph from the E.

Mostly clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 43F. Dew point will be around 42F with an average humidity of 89%. Winds will be 0 mph from the W.