South Philadelphia Weather Forecast

    • 64
    • 70

    Chance Rain Showers

    • 62
    • 82

    Becoming Sunny

    • 60
    • 86

    Mostly Sunny

    • 59
    • 77

    Mostly Sunny

    • 60
    • 76

    Partly Sunny

    • 62
    • 79

    Partly Sunny

    • 63
    • 83

    Partly Sunny

Today 17 Sep Philadelphia

Cloudy. A chance of Showers with a slight chance of Thunderstorms late this Morning, then Showers likely with a chance of Thunderstorms this afternoon. Near steady temperature in the upper 60s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

Tonight 17 Sep Philadelphia

A chance of Thunderstorms this evening. Cloudy with a chance of Showers. Patchy fog this evening. Areas of fog after midnight. Lows in the lower 60s. Northeast Winds 5 to 10 Mph. Chance of rain 40 percent.

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South Philadelphia Temperature Statistics

September Temperature

Philadelphia, Philadelphia International Airport (4.3 miles)

  • Lowest 8 September, 2025

    57 °F

  • Average September

    71.8 °F

  • Highest 6 September, 2025

    90 °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

    67 °F
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