Philadelphia Weather Forecast

    • 63
    • 85

    Mostly Sunny

    • 62
    • 83

    Partly Sunny

    • 62
    • 77

    Mostly Cloudy

    • 63
    • 79

    Chance Rain Showers

    • 64
    • 80

    Chance Rain Showers

    • 64
    • 85

    Partly Sunny

Today 14 Sep Philadelphia

Patchy fog in the morning. Sunny, hot with Highs in the mid 80s. West Winds around 5 Mph.

Tonight 14 Sep Philadelphia

Partly cloudy. Patchy fog after midnight. Lows in the lower 60s. Northeast Winds around 5 Mph in the Evening, becoming light and variable.

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Philadelphia Temperature Statistics

September Temperature

Philadelphia, Philadelphia International Airport (6.2 miles)

  • Lowest 8 September, 2025

    57 °F

  • Average September

    71.4 °F

  • Highest 6 September, 2025

    90 °F

Climate (2020–Present)

Philadelphia, Philadelphia International Airport (6.2 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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