Port Costa, California | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Tuesday
    Sunny
    64°
    Forecast night icon
    Night
    Clear
    50°
    Tuesday 5/7
    Day
    64°
    Sunny
    Forecast day icon
    Night
    50°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid 70s. North winds 10 to 15 mph.
    Night Details
    Clear. Lows in the upper 40s to mid 50s. West winds 10 to 20 mph.
  • Forecast day icon
    Wednesday
    Sunny
    72°
    Forecast night icon
    Night
    Clear
    57°
    Wednesday 5/8
    Day
    72°
    Sunny
    Forecast day icon
    Night
    57°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs around 80. North winds 10 to 20 mph.
    Night Details
    Clear. Lows in the lower to mid 50s. North winds 10 to 20 mph.
  • Forecast day icon
    Thursday
    Sunny
    78°
    Forecast night icon
    Night
    Clear
    53°
    Thursday 5/9
    Day
    78°
    Sunny
    Forecast day icon
    Night
    53°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid 80s. Northeast winds 5 to 15 mph.
    Night Details
    Clear. Lows in the mid 50s.
  • Forecast day icon
    Friday
    Sunny
    78°
    Forecast night icon
    Night
    Clear
    54°
    Friday 5/10
    Day
    78°
    Sunny
    Forecast day icon
    Night
    54°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Clear. Highs in the mid 80s to lower 90s. Lows in the upper 50s.
    Night Details
    Clear. Highs in the mid 80s to lower 90s. Lows in the upper 50s.
  • Forecast day icon
    Saturday
    Sunny
    76°
    Forecast night icon
    Night
    Clear
    52°
    Saturday 5/11
    Day
    76°
    Sunny
    Forecast day icon
    Night
    52°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Clear. Highs in the mid 80s to lower 90s. Lows in the upper 50s.
    Night Details
    Clear. Highs in the mid 80s to lower 90s. Lows in the upper 50s.
  • Forecast day icon
    Sunday
    Sunny
    66°
    Forecast night icon
    Night
    Mostly Clear
    49°
    Sunday 5/12
    Day
    66°
    Sunny
    Forecast day icon
    Night
    49°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Clear. Highs in the mid 80s to lower 90s. Lows in the upper 50s.
    Night Details
    Mostly clear. Lows in the mid 50s. Highs in the 80s.
  • Forecast day icon
    Monday
    Mostly Sunny
    68°
    Forecast night icon
    Night
    Clear
    50°
    Monday 5/13
    Day
    68°
    Mostly Sunny
    Forecast day icon
    Night
    50°
    Clear
    Forecast night icon
    Day Details
    Mostly clear. Lows in the mid 50s. Highs in the 80s.
    Night Details
    Clear. Low temperature around 50F. Dew point will be around 48F with an average humidity of 84%. Winds will be 10 mph from the SW.
  • Forecast day icon
    Tuesday
    Sunny
    66°
    Forecast night icon
    Night
    Clear
    49°
    Tuesday 5/14
    Day
    66°
    Sunny
    Forecast day icon
    Night
    49°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 66F. Dew point will be around 48F with an average humidity of 63%. Winds will be 8 mph from the W.
    Night Details
    Clear. Low temperature around 49F. Dew point will be around 48F with an average humidity of 77%. Winds will be 9 mph from the SW.
  • Forecast day icon
    Wednesday
    Sunny
    64°
    Forecast night icon
    Night
    Clear
    49°
    Wednesday 5/15
    Day
    64°
    Sunny
    Forecast day icon
    Night
    49°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 64F. Dew point will be around 48F with an average humidity of 65%. Winds will be 9 mph from the W.
    Night Details
    Clear. Low temperature around 49F. Dew point will be around 47F with an average humidity of 77%. Winds will be 9 mph from the SW.
  • Forecast day icon
    Thursday
    Sunny
    63°
    Forecast night icon
    Night
    Clear
    49°
    Thursday 5/16
    Day
    63°
    Sunny
    Forecast day icon
    Night
    49°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 63F. Dew point will be around 47F with an average humidity of 64%. Winds will be 10 mph from the SW.
    Night Details
    Clear. Low temperature around 49F. Dew point will be around 47F with an average humidity of 79%. Winds will be 10 mph from the SW.