William Penn State Forest Weather Forecast

    • 49
    • 54

    Rain

    • 28
    • 67

    Rain Showers

    • 21
    • 38

    Partly Sunny

    • 26
    • 38

    Mostly Cloudy

    • 33
    • 48

    Mostly Cloudy

    • 38
    • 54

    Chance Rain Showers

    • 36
    • 58

    Slight Chance Rain Showers

Today 15 Mar Western Chester

Mostly cloudy. Highs in the lower 50s. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 15 Mar Western Chester

A slight chance of rain this Evening, then rain with a slight chance of Thunderstorms after midnight. Not as cool with Lows in the upper 40s. Temperature rising into the mid 50s after midnight. Southeast Winds around 15 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.

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William Penn State Forest Temperature Statistics

March Temperature

Phillips Army Air Field / Aberdeen (18 miles)

  • Lowest 13 March, 2026

    23.5 °F

  • Average March

    46.1 °F

  • Highest 10 March, 2026

    80.6 °F

Climate (2021–Present)

Phillips Army Air Field / Aberdeen (18 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    57.6 °F

  • Average High 2021–2026

    65.5 °F
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