Philadelphia Weather Forecast

    • 69
    • 95

    Partly Sunny

    • 68
    • 96

    Slight Chance Thunderstorms

    • 66
    • 94

    Partly Sunny

    • 65
    • 92

    Partly Sunny

    • 64
    • 92

    Slight Chance Thunderstorms

    • 61
    • 87

    Chance Rain Showers

    • 57
    • 82

    Chance Rain Showers

Today 13 Sep Cass

Mostly sunny. Hot. Near steady temperature in the mid 90s. Southwest Winds 5 to 10 Mph.

Tonight 13 Sep Cass

Partly cloudy. Lows in the upper 60s. Southwest Winds around 5 Mph.

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Philadelphia Temperature Statistics

September Temperature

Jacksonville Municipal Airport (11.8 miles)

  • Lowest 7 September, 2025

    39.2 °F
  • Average September

    61.9 °F
  • Highest 11 September, 2025

    85.5 °F

Climate (2020–Present)

Jacksonville Municipal Airport (11.8 miles)

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  • Average Low 2020–2025

    43.8 °F
  • Average 2020–2025

    53.7 °F
  • Average High 2020–2025

    63.4 °F
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