Philadelphia International Airport Weather Forecast

    • 54
    • 75

    Decreasing Clouds

    • 53
    • 75

    Mostly Sunny

    • 58
    • 76

    Mostly Cloudy

    • 57
    • 74

    Partly Sunny

    • 59
    • 81

    Mostly Sunny

    • 55
    • 77

    Mostly Sunny

Today 7 Sep Delaware

Cloudy with a chance of Showers late this Morning, then partly sunny this afternoon. Not as warm with Highs in the lower 70s. Northwest Winds 5 to 10 Mph. Chance of rain 30 percent.

Tonight 7 Sep Delaware

Mostly clear. Lows in the lower 50s. West Winds around 5 Mph, becoming north after midnight.

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Philadelphia International Airport Temperature Statistics

September Temperature

Philadelphia, Philadelphia International Airport (0.6 miles)

  • Lowest 2 September, 2025

    61 °F

  • Average September

    72.6 °F

  • Highest 5 September, 2025

    88 °F

Climate (2020–Present)

Philadelphia, Philadelphia International Airport (0.6 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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