Port Costa, California | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Clear
    46°
    Sunday 5/19
    Forecast night icon
    46°
    Clear
    Hourly
    Night Details
    Clear. Lows near 50. Southwest winds 5 to 10 mph.
  • Forecast day icon
    Monday
    Sunny
    70°
    Forecast night icon
    Night
    Clear
    49°
    Monday 5/20
    Day
    70°
    Sunny
    Forecast day icon
    Night
    49°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the lower 80s. Northwest winds 5 to 15 mph.
    Night Details
    Clear. Lows in the lower to mid 50s. West winds 5 to 15 mph.
  • Forecast day icon
    Tuesday
    Sunny
    76°
    Forecast night icon
    Night
    Clear
    51°
    Tuesday 5/21
    Day
    76°
    Sunny
    Forecast day icon
    Night
    51°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph.
    Night Details
    Clear. Lows in the lower 50s. Southwest winds 5 to 15 mph.
  • Forecast day icon
    Wednesday
    Sunny
    69°
    Forecast night icon
    Night
    Mostly Clear
    48°
    Wednesday 5/22
    Day
    69°
    Sunny
    Forecast day icon
    Night
    48°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the upper 70s to mid 80s.
    Night Details
    Mostly clear. Lows in the upper 40s to mid 50s. Highs in the mid 70s to lower 80s.
  • Forecast day icon
    Thursday
    Mostly Sunny
    68°
    Forecast night icon
    Night
    Mostly Clear
    49°
    Thursday 5/23
    Day
    68°
    Mostly Sunny
    Forecast day icon
    Night
    49°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly clear. Lows in the upper 40s to mid 50s. Highs in the mid 70s to lower 80s.
    Night Details
    Mostly clear. Lows in the upper 40s to mid 50s. Highs in the mid 70s to lower 80s.
  • Forecast day icon
    Friday
    Mostly Sunny
    60°
    Forecast night icon
    Night
    Partly Cloudy
    48°
    Friday 5/24
    Day
    60°
    Mostly Sunny
    Forecast day icon
    Night
    48°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly clear. Lows in the upper 40s to mid 50s. Highs in the mid 70s to lower 80s.
    Night Details
    Partly cloudy. Lows in the lower 50s. Highs in the lower 70s.
  • Forecast day icon
    Saturday
    Partly Cloudy
    55°
    Forecast night icon
    Night
    Mostly Clear
    46°
    Saturday 5/25
    Day
    55°
    Partly Cloudy
    Forecast day icon
    Night
    46°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy. Lows in the lower 50s. Highs in the lower 70s.
    Night Details
    Mostly clear. Lows around 50. Highs in the 70s.
  • Forecast day icon
    Sunday
    Mostly Sunny
    61°
    Forecast night icon
    Night
    Clear
    46°
    Sunday 5/26
    Day
    61°
    Mostly Sunny
    Forecast day icon
    Night
    46°
    Clear
    Forecast night icon
    Day Details
    Mostly clear. Lows around 50. Highs in the 70s.
    Night Details
    Clear. Low temperature around 46F. Dew point will be around 45F with an average humidity of 85%. Winds will be 10 mph from the SW.
  • Forecast day icon
    Monday
    Sunny
    63°
    Forecast night icon
    Night
    Clear
    46°
    Monday 5/27
    Day
    63°
    Sunny
    Forecast day icon
    Night
    46°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 63F. Dew point will be around 47F with an average humidity of 73%. Winds will be 10 mph from the SW.
    Night Details
    Clear. Low temperature around 46F. Dew point will be around 46F with an average humidity of 83%. Winds will be 10 mph from the SW.
  • Forecast day icon
    Tuesday
    Sunny
    64°
    Forecast night icon
    Night
    Clear
    47°
    Tuesday 5/28
    Day
    64°
    Sunny
    Forecast day icon
    Night
    47°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 64F. Dew point will be around 49F with an average humidity of 73%. Winds will be 11 mph from the SW.
    Night Details
    Clear. Low temperature around 47F. Dew point will be around 47F with an average humidity of 81%. Winds will be 11 mph from the SW.