Wallace Weather Forecast

    • 57
    • 74

    Rain

    • 51
    • 68

    Rain Showers Likely

    • 48
    • 61

    Rain Showers Likely

    • 49
    • 61

    Chance Rain Showers

    • 48
    • 61

    Chance Rain Showers

    • 48
    • 63

    Chance Rain Showers

Today 20 Sep Western Chester

Rain. A chance of Thunderstorms this afternoon. Highs in the mid 70s. South Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.

Tonight 20 Sep Western Chester

Mostly cloudy with rain with a chance of Thunderstorms in the Evening, then partly cloudy after midnight. Humid with Lows in the upper 50s. West Winds around 5 Mph, becoming north after midnight. Chance of rain 90 percent.

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Wallace Temperature Statistics

September Temperature

Chester County Airport (9.3 miles)

  • Lowest 15 September, 2026

    50.7 °F

  • Average September

    71.1 °F

  • Highest 1 September, 2026

    87.3 °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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