William Penn State Forest Weather Forecast

    • 12
    • 28

    Decreasing Clouds

    • 22
    • 33

    Partly Sunny

    • 25
    • 44

    Mostly Cloudy

    • 37
    • 50

    Rain

    • 23
    • 47

    Mostly Cloudy

    • 31
    • 39

    Chance Rain

    • 27
    • 47

    Slight Chance Rain

Today 15 Dec Western Chester

Mostly sunny this Morning, then becoming mostly cloudy. Cold with Highs in the upper 20s. West Winds 5 to 10 Mph with Gusts up to 25 Mph. Wind chill Values as low as 1 below this morning.

Tonight 15 Dec Western Chester

Mostly cloudy this Evening, then clearing. Cold with Lows around 12. Southwest Winds around 5 Mph.

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William Penn State Forest Temperature Statistics

December Temperature

Phillips Army Air Field / Aberdeen (18 miles)

  • Lowest 9 December, 2025

    13.3 °F

  • Average December

    34.8 °F

  • Highest 1 December, 2025

    47.1 °F

Climate (2020–Present)

Phillips Army Air Field / Aberdeen (18 miles)

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  • Average Low 2020–2025

    47.2 °F

  • Average 2020–2025

    57.2 °F

  • Average High 2020–2025

    65.1 °F
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