10-Day Weather Forecast - Port Costa, CA

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  • |50°F
    Mostly Clear
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    Tonight

    50°F

    Mostly clear. Lows in the upper 40s. Southwest winds 5 to 10 mph.

    Hourly details
  • Day

    71°F

    Sunny. Highs in the upper 70s. West winds 5 to 15 mph.

    Night

    51°F

    Mostly clear. Lows in the upper 40s. Southwest winds 5 to 15 mph.

    Hourly details
  • Day

    73°F

    Sunny. Highs in the lower 80s. West winds 5 to 10 mph.

    Night

    51°F

    Mostly clear. Lows in the lower 50s. Southwest winds 5 to 15 mph.

    Hourly details
  • Day

    71°F

    Partly cloudy in the morning then becoming sunny. Highs in the upper 70s to mid 80s.

    Night

    51°F

    Partly cloudy. Lows in the lower 50s. Highs in the 70s.

    Hourly details
  • Weekend Weather

  • Day

    66°F

    Partly cloudy. Lows in the lower 50s. Highs in the 70s.

    Night

    50°F

    Partly cloudy. Lows in the lower 50s. Highs in the 70s.

    Hourly details
  • Day

    63°F

    Partly cloudy. Lows in the lower 50s. Highs in the 70s.

    Night

    49°F

    Partly cloudy. Lows in the lower 50s. Highs in the 70s.

    Hourly details
  • Day

    62°F

    Partly cloudy. A slight chance of rain. Highs in the lower 70s. Lows in the lower 50s.

    Night

    50°F

    Partly cloudy. A slight chance of rain. Highs in the lower 70s. Lows in the lower 50s.

    Hourly details
  • Day

    60°F

    Mostly cloudy in the morning then becoming partly cloudy. A slight chance of rain. Highs in the lower 70s.

    Night

    50°F

    Clear. Low temperature around 50F. Dew point will be around 46F with an average humidity of 80%. Winds will be 8 mph from the SW.

  • Day

    63°F

    Mostly cloudy. High temperature around 63F. Dew point will be around 49F with an average humidity of 69%. Winds will be 9 mph from the SW.

    Night

    49°F

    Clear. Low temperature around 49F. Dew point will be around 47F with an average humidity of 81%. Winds will be 9 mph from the SW.

  • Day

    66°F

    Sunny. High temperature around 66F. Dew point will be around 50F with an average humidity of 65%. Winds will be 9 mph from the SW.

    Night

    49°F

    Mostly clear. Low temperature around 49F. Dew point will be around 47F with an average humidity of 76%. Winds will be 9 mph from the SW.