Chatham Weather Forecast

    • 60
    • 79

    Mostly Sunny

    • 66
    • 83

    Rain Showers Likely

    • 64
    • 83

    Rain Showers

    • 64
    • 82

    Chance Thunderstorms

    • 63
    • 81

    Partly Sunny

    • 66
    • 83

    Partly Sunny

    • 69
    • 86

    Partly Sunny

Today 25 Aug Eastern Chester

Sunny. Highs around 80. Northwest Winds 5 to 10 Mph.

Tonight 25 Aug Eastern Chester

Mostly clear. Lows in the lower 60s. Northwest Winds around 5 Mph.

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Chatham Temperature Statistics

August Temperature

Chester County Airport (9.3 miles)

  • Lowest 21 August, 2026

    59.7 °F

  • Average August

    74.1 °F

  • Highest 9 August, 2026

    87.6 °F

Climate (2021–2026)

Chester County Airport (9.3 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    54.4 °F

  • Average High 2021–2026

    63 °F
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