Marsh Creek Reservoir Weather Forecast

    • 58
    • 82

    Sunny

    • 56
    • 85

    Mostly Sunny

    • 55
    • 76

    Partly Sunny

    • 56
    • 73

    Mostly Cloudy

    • 59
    • 78

    Partly Sunny

    • 62
    • 83

    Mostly Cloudy

Today 18 Sep Western Chester

Areas of fog this morning. Mostly sunny. Warmer with Highs in the lower 80s. Northwest Winds around 5 Mph.

Tonight 18 Sep Western Chester

Clear. Lows in the upper 50s. West Winds around 5 Mph.

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Marsh Creek Reservoir Temperature Statistics

September Temperature

Chester County Airport (9.3 miles)

  • Lowest 9 September, 2025

    48.2 °F

  • Average September

    66.6 °F

  • Highest 6 September, 2025

    84.2 °F

Climate (2020–Present)

Chester County Airport (9.3 miles)

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  • Average Low 2020–2025

    46.1 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    63.1 °F
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