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September weather forecast in Philadelphia

Average data for 10 years

  • 30 August, Sunday. morning, 31°; night, 22°; rain; Feels like +28°; Pressure 747 millimeters of mercury; Humidity 75%; Wind speed 3.9 Meters per second, easterly;

  • 31 August, Monday. morning, 31°; night, 22°; ; Feels like +28°; Pressure 748 millimeters of mercury; Humidity 73%; Wind speed 3.5 Meters per second, easterly;

  • 1 September, Tuesday. morning, 31°; night, 22°; ; Feels like +28°; Pressure 748 millimeters of mercury; Humidity 71%; Wind speed 3.5 Meters per second, easterly;

  • 2 September, Wednesday. morning, 31°; night, 22°; rain; Feels like +28°; Pressure 748 millimeters of mercury; Humidity 73%; Wind speed 3.4 Meters per second, easterly;

  • 3 September, Thursday. morning, 32°; night, 22°; ; Feels like +28°; Pressure 748 millimeters of mercury; Humidity 71%; Wind speed 3.2 Meters per second, easterly;

  • 4 September, Friday. morning, 32°; night, 22°; ; Feels like +28°; Pressure 748 millimeters of mercury; Humidity 71%; Wind speed 3.2 Meters per second, easterly;

  • 5 September, Saturday. morning, 31°; night, 21°; rain; Feels like +27°; Pressure 748 millimeters of mercury; Humidity 70%; Wind speed 3.4 Meters per second, north-easterly;

  • 6 September, Sunday. morning, 31°; night, 21°; rain; Feels like +27°; Pressure 749 millimeters of mercury; Humidity 70%; Wind speed 3.4 Meters per second, north-easterly;

  • 7 September, Monday. morning, 31°; night, 21°; ; Feels like +26°; Pressure 748 millimeters of mercury; Humidity 69%; Wind speed 3.2 Meters per second, north-easterly;

  • 8 September, Tuesday. morning, 31°; night, 21°; ; Feels like +26°; Pressure 748 millimeters of mercury; Humidity 67%; Wind speed 3 Meters per second, north-easterly;

  • 9 September, Wednesday. morning, 30°; night, 20°; ; Feels like +26°; Pressure 748 millimeters of mercury; Humidity 69%; Wind speed 3.2 Meters per second, north-easterly;

  • 10 September, Thursday. morning, 31°; night, 21°; ; Feels like +26°; Pressure 749 millimeters of mercury; Humidity 68%; Wind speed 3 Meters per second, north-easterly;

  • 11 September, Friday. morning, 31°; night, 21°; ; Feels like +26°; Pressure 749 millimeters of mercury; Humidity 67%; Wind speed 3.2 Meters per second, easterly;

  • 12 September, Saturday. morning, 30°; night, 20°; rain; Feels like +26°; Pressure 748 millimeters of mercury; Humidity 72%; Wind speed 3.5 Meters per second, easterly;

  • 13 September, Sunday. morning, 30°; night, 20°; rain; Feels like +25°; Pressure 748 millimeters of mercury; Humidity 70%; Wind speed 3.2 Meters per second, easterly;

  • 14 September, Monday. morning, 30°; night, 20°; ; Feels like +25°; Pressure 748 millimeters of mercury; Humidity 71%; Wind speed 3.4 Meters per second, easterly;

  • 15 September, Tuesday. morning, 30°; night, 20°; ; Feels like +25°; Pressure 749 millimeters of mercury; Humidity 68%; Wind speed 3.5 Meters per second, north-easterly;

  • 16 September, Wednesday. morning, 30°; night, 20°; ; Feels like +25°; Pressure 748 millimeters of mercury; Humidity 68%; Wind speed 3.7 Meters per second, north-easterly;

  • 17 September, Thursday. morning, 30°; night, 20°; ; Feels like +25°; Pressure 748 millimeters of mercury; Humidity 69%; Wind speed 3.2 Meters per second, north-easterly;

  • 18 September, Friday. morning, 30°; night, 20°; ; Feels like +26°; Pressure 748 millimeters of mercury; Humidity 70%; Wind speed 3 Meters per second, easterly;

  • 19 September, Saturday. morning, 30°; night, 20°; ; Feels like +25°; Pressure 748 millimeters of mercury; Humidity 68%; Wind speed 3 Meters per second, easterly;

  • 20 September, Sunday. morning, 30°; night, 20°; ; Feels like +25°; Pressure 748 millimeters of mercury; Humidity 70%; Wind speed 3.2 Meters per second, south-easterly;

  • 21 September, Monday. morning, 30°; night, 20°; rain; Feels like +25°; Pressure 748 millimeters of mercury; Humidity 72%; Wind speed 3.2 Meters per second, easterly;

  • 22 September, Tuesday. morning, 30°; night, 20°; ; Feels like +25°; Pressure 748 millimeters of mercury; Humidity 69%; Wind speed 3.5 Meters per second, easterly;

  • 23 September, Wednesday. morning, 29°; night, 20°; ; Feels like +24°; Pressure 749 millimeters of mercury; Humidity 69%; Wind speed 3.2 Meters per second, easterly;

  • 24 September, Thursday. morning, 29°; night, 19°; rain; Feels like +24°; Pressure 748 millimeters of mercury; Humidity 71%; Wind speed 3.4 Meters per second, south-easterly;

  • 25 September, Friday. morning, 28°; night, 18°; rain; Feels like +24°; Pressure 748 millimeters of mercury; Humidity 73%; Wind speed 3.5 Meters per second, south-easterly;

  • 26 September, Saturday. morning, 28°; night, 18°; ; Feels like +23°; Pressure 747 millimeters of mercury; Humidity 72%; Wind speed 3.5 Meters per second, north-easterly;

  • 27 September, Sunday. morning, 28°; night, 18°; ; Feels like +22°; Pressure 747 millimeters of mercury; Humidity 71%; Wind speed 3.5 Meters per second, north-easterly;

  • 28 September, Monday. morning, 28°; night, 17°; ; Feels like +22°; Pressure 748 millimeters of mercury; Humidity 68%; Wind speed 3.7 Meters per second, northerly;

  • 29 September, Tuesday. morning, 27°; night, 16°; ; Feels like +20°; Pressure 749 millimeters of mercury; Humidity 67%; Wind speed 3.5 Meters per second, north-easterly;

  • 30 September, Wednesday. morning, 27°; night, 17°; ; Feels like +20°; Pressure 749 millimeters of mercury; Humidity 66%; Wind speed 3.4 Meters per second, north-easterly;

  • 1 October, Thursday. morning, 28°; night, 17°; ; Feels like +21°; Pressure 749 millimeters of mercury; Humidity 67%; Wind speed 3.2 Meters per second, north-easterly;

  • 2 October, Friday. morning, 27°; night, 17°; ; Feels like +21°; Pressure 750 millimeters of mercury; Humidity 66%; Wind speed 3.4 Meters per second, easterly;

  • 3 October, Saturday. morning, 27°; night, 17°; ; Feels like +21°; Pressure 750 millimeters of mercury; Humidity 67%; Wind speed 3.5 Meters per second, easterly;

September in Philadelphia is the sunniest month of the year. In September, the weather in Philadelphia is typically warm. The average daily high in September is 25 degrees above zero. On average, Philadelphia has 17 sunny, 8 rainy, and 4 cloudy days in September. September along with October is considered the most comfortable time to visit Philadelphia.