10-Day Weather Forecast - Port Costa, CA

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  • 56|44°F
    Mostly Cloudy
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    Today

    56°F

    Mostly cloudy. Patchy dense fog in the morning. Highs in the upper 40s to mid 50s. Light winds. . . Becoming north around 5 mph in the afternoon.

    Tonight

    44°F

    Partly cloudy in the evening then becoming mostly cloudy. Patchy fog. Lows in the mid 40s. West winds around 5 mph. . . Becoming south after midnight.

    Hourly details
  • Day

    61°F

    Mostly cloudy. Patchy fog in the morning. A chance of rain in the afternoon. Highs near 60. Light winds. . . Becoming west around 5 mph in the afternoon.

    Night

    49°F

    Mostly cloudy. A chance of rain. Lows in the mid 50s. South winds 5 to 10 mph. Chance of rain 50 percent.

    Hourly details
  • Day

    64°F

    Cloudy in the morning then becoming partly cloudy. A chance of rain in the morning. A slight chance of rain in the afternoon. Highs in the mid 60s. Southwest winds 5 to 10 mph. Chance of rain 50 percent.

    Night

    45°F

    Partly cloudy in the evening then becoming mostly cloudy. Patchy fog. A slight chance of rain. Lows in the upper 40s.

    Hourly details
  • Day

    60°F

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

    Night

    46°F

    Cloudy. Patchy fog. A chance of rain. Lows in the lower 50s.

    Hourly details
  • Day

    58°F

    Cloudy. A chance of rain. Highs around 60.

    Night

    50°F

    Rain likely. Lows in the lower 50s.

    Hourly details
  • Weekend Weather

  • Day

    59°F

    Cloudy. A chance of rain. Highs in the upper 50s.

    Night

    51°F

    Rain likely. Lows around 50. Highs in the mid 50s.

    Hourly details
  • Day

    60°F

    Rain likely. Lows around 50. Highs in the mid 50s.

    Night

    48°F

    Cloudy with probable rain. Chance of precipitation 65%. Low temperature around 48F. Dew point will be around 49F with an average humidity of 98%. Winds will be 7 mph from the S.

  • Day

    56°F

    Cloudy with a chance of rain. Chance of precipitation 55%. High temperature around 56F. Dew point will be around 50F with an average humidity of 88%. Winds will be 6 mph from the S.

    Night

    44°F

    Cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 44F. Dew point will be around 44F with an average humidity of 94%. Winds will be 4 mph from the SW.

  • Day

    51°F

    Cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 51F. Dew point will be around 45F with an average humidity of 82%. Winds will be 3 mph from the S.

    Night

    43°F

    Cloudy with a chance of rain. Chance of precipitation 55%. Low temperature around 43F. Dew point will be around 42F with an average humidity of 93%. Winds will be 5 mph from the S.

  • Day

    50°F

    Cloudy with a chance of rain. Chance of precipitation 55%. High temperature around 50F. Dew point will be around 44F with an average humidity of 85%. Winds will be 5 mph from the S.

    Night

    42°F

    Cloudy with a chance of rain. Chance of precipitation 55%. Low temperature around 42F. Dew point will be around 42F with an average humidity of 93%. Winds will be 4 mph from the S.