Fairmount Park Weather Forecast

    • 61
    • 83

    Becoming Sunny

    • 61
    • 86

    Mostly Sunny

    • 59
    • 76

    Partly Sunny

    • 58
    • 73

    Mostly Cloudy

    • 61
    • 79

    Partly Sunny

    • 64
    • 83

    Slight Chance Rain Showers

Today 18 Sep Philadelphia

Patchy fog this morning. Partly sunny. Warmer with Highs in the lower 80s. Northwest Winds around 5 Mph.

Tonight 18 Sep Philadelphia

Mostly clear. Lows in the lower 60s. West Winds around 5 Mph.

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Fairmount Park Temperature Statistics

September Temperature

Philadelphia, Philadelphia International Airport (8.1 miles)

  • Lowest 8 September, 2025

    57 °F

  • Average September

    71.6 °F

  • Highest 6 September, 2025

    90 °F

Climate (2020–Present)

Philadelphia, Philadelphia International Airport (8.1 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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