Marsh Creek Reservoir Weather Forecast

    • 30
    • 38

    Increasing Clouds

    • 21
    • 43

    Partly Sunny

    • 27
    • 37

    Chance Rain/Snow

    • 32
    • 45

    Cloudy

    • 30
    • 43

    Chance Rain

    • 42
    • 49

    Chance Rain

Today 20 Dec Western Chester

Mostly sunny. Much cooler with Highs in the upper 30s. West Winds 10 to 15 Mph, becoming south 5 to 10 Mph this afternoon.

Tonight 20 Dec Western Chester

Mostly clear in the Evening, then becoming mostly cloudy. Cold with Lows around 30. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marsh Creek Reservoir Temperature Statistics

December Temperature

Chester County Airport (9.3 miles)

  • Lowest 16 December, 2025

    8.6 °F

  • Average December

    28.4 °F

  • Highest 1 December, 2025

    41 °F

Climate (2020–Present)

Chester County Airport (9.3 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    63 °F
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