Port Costa, California | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Wednesday
    Sunny
    69°
    Forecast night icon
    Night
    Clear
    51°
    Wednesday 5/1
    Day
    69°
    Sunny
    Forecast day icon
    Night
    51°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the upper 70s. Northwest winds 10 to 20 mph.
    Night Details
    Clear. Lows in the upper 40s to mid 50s. West winds 5 to 15 mph.
  • Forecast day icon
    Thursday
    Sunny
    70°
    Forecast night icon
    Night
    Clear
    52°
    Thursday 5/2
    Day
    70°
    Sunny
    Forecast day icon
    Night
    52°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the lower 80s. West winds 10 to 20 mph.
    Night Details
    Clear. Lows in the lower to mid 50s. West winds 10 to 20 mph. . . Becoming 5 to 10 mph after midnight.
  • Forecast day icon
    Friday
    Sunny
    69°
    Forecast night icon
    Night
    Mostly Cloudy
    52°
    Friday 5/3
    Day
    69°
    Sunny
    Forecast day icon
    Night
    52°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs around 80. West winds 5 to 10 mph.
    Night Details
    Mostly clear in the evening then becoming mostly cloudy. Lows in the mid 50s.
  • Forecast day icon
    Saturday
    Rain
    53°
    Forecast night icon
    Night
    Partly Cloudy
    43°
    Saturday 5/4
    Day
    53°
    Rain
    Forecast day icon
    Night
    43°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Rain likely. Highs in the lower 60s.
    Night Details
    Partly cloudy in the evening then becoming mostly clear. Lows in the mid 40s.
  • Forecast day icon
    Sunday
    Mostly Sunny
    56°
    Forecast night icon
    Night
    Mostly Clear
    44°
    Sunday 5/5
    Day
    56°
    Mostly Sunny
    Forecast day icon
    Night
    44°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly clear. Highs in the mid 60s. Lows in the mid 40s.
    Night Details
    Mostly clear. Highs in the mid 60s. Lows in the mid 40s.
  • Forecast day icon
    Monday
    Mostly Sunny
    60°
    Forecast night icon
    Night
    Mostly Clear
    47°
    Monday 5/6
    Day
    60°
    Mostly Sunny
    Forecast day icon
    Night
    47°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly clear. Highs in the lower 70s. Lows in the upper 40s.
    Night Details
    Mostly clear. Highs in the lower 70s. Lows in the upper 40s.
  • Forecast day icon
    Tuesday
    Mostly Sunny
    65°
    Forecast night icon
    Night
    Mostly Clear
    46°
    Tuesday 5/7
    Day
    65°
    Mostly Sunny
    Forecast day icon
    Night
    46°
    Mostly Clear
    Forecast night icon
    Day Details
    Mostly clear. Highs in the lower 70s. Lows in the upper 40s.
    Night Details
    Mostly clear. Low temperature around 46F. Dew point will be around 43F with an average humidity of 70%. Winds will be 10 mph from the W.
  • Forecast day icon
    Wednesday
    Sunny
    65°
    Forecast night icon
    Night
    Clear
    47°
    Wednesday 5/8
    Day
    65°
    Sunny
    Forecast day icon
    Night
    47°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 65F. Dew point will be around 42F with an average humidity of 56%. Winds will be 8 mph from the W.
    Night Details
    Clear. Low temperature around 47F. Dew point will be around 41F with an average humidity of 64%. Winds will be 10 mph from the W.
  • Forecast day icon
    Thursday
    Sunny
    66°
    Forecast night icon
    Night
    Clear
    49°
    Thursday 5/9
    Day
    66°
    Sunny
    Forecast day icon
    Night
    49°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 66F. Dew point will be around 43F with an average humidity of 55%. Winds will be 7 mph from the W.
    Night Details
    Clear. Low temperature around 49F. Dew point will be around 42F with an average humidity of 62%. Winds will be 10 mph from the W.
  • Forecast day icon
    Friday
    Sunny
    68°
    Forecast night icon
    Night
    Clear
    50°
    Friday 5/10
    Day
    68°
    Sunny
    Forecast day icon
    Night
    50°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 68F. Dew point will be around 46F with an average humidity of 56%. Winds will be 7 mph from the W.
    Night Details
    Clear. Low temperature around 50F. Dew point will be around 45F with an average humidity of 66%. Winds will be 9 mph from the W.