South Philadelphia Weather Forecast

    • 65
    • 84

    Chance Rain Showers

    • 70
    • 87

    Mostly Sunny

    • 61
    • 89

    Rain Showers Likely

    • 56
    • 73

    Slight Chance Rain Showers

    • 54
    • 73

    Mostly Sunny

    • 54
    • 76

    Mostly Cloudy

Today 4 Sep Philadelphia

Mostly sunny. Highs in the mid 80s. South Winds 10 to 15 Mph.

Tonight 4 Sep Philadelphia

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the mid 60s. South Winds 10 to 15 Mph. Chance of rain 50 percent.

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South Philadelphia Temperature Statistics

September Temperature

Philadelphia, Philadelphia International Airport (4.3 miles)

  • Lowest 2 September, 2025

    61 °F

  • Average September

    70.4 °F

  • Highest 1 September, 2025

    81 °F

Climate (2020–Present)

Philadelphia, Philadelphia International Airport (4.3 miles)

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  • Average Low 2020–2025

    50.3 °F

  • Average 2020–2025

    58.4 °F

  • Average High 2020–2025

    66.9 °F
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