Coatesville Weather Forecast

    • 14
    • 27

    Becoming Sunny

    • 21
    • 31

    Partly Sunny

    • 24
    • 43

    Mostly Cloudy

    • 34
    • 50

    Rain

    • 21
    • 42

    Mostly Cloudy

    • 32
    • 38

    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 in the Evening, then becoming partly cloudy. Cold with Lows around 14. Southwest Winds around 5 Mph.

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Coatesville Temperature Statistics

December Temperature

Chester County Airport (1.9 miles)

  • Lowest 9 December, 2025

    12.2 °F

  • Average December

    30.3 °F

  • Highest 1 December, 2025

    41 °F

Climate (2020–Present)

Chester County Airport (1.9 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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