King of Prussia Weather Forecast

    • 69
    • 86

    Becoming Sunny

    • 60
    • 87

    Rain Showers

    • 52
    • 75

    Slight Chance Rain Showers

    • 51
    • 74

    Mostly Sunny

    • 53
    • 76

    Mostly Sunny

    • 53
    • 75

    Mostly Sunny

Today 5 Sep Eastern Montgomery

Patchy fog this morning. Mostly sunny. Hot with Highs in the mid 80s. Southwest Winds around 5 Mph, increasing to around 10 Mph with Gusts up to 20 Mph this afternoon.

Tonight 5 Sep Eastern Montgomery

Mostly clear. Patchy fog after midnight. Humid with Lows in the upper 60s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

King of Prussia Temperature Statistics

September Temperature

Philadelphia - Wings Field Airport (6.2 miles)

  • Lowest 1 September, 2025

    51.1 °F

  • Average September

    67.1 °F

  • Highest 1 September, 2025

    80.2 °F

Climate (2020–Present)

Philadelphia - Wings Field Airport (6.2 miles)

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  • Average Low 2020–2025

    44.7 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    64.6 °F
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