Wallace Weather Forecast

    • 21
    • 34

    Increasing Clouds

    • 25
    • 40

    Mostly Cloudy

    • 15
    • 29

    Partly Sunny

    • 19
    • 28

    Mostly Cloudy

    • 22
    • 34

    Partly Sunny

    • 31
    • 42

    Mostly Cloudy

Today 12 Dec Western Chester

Mostly sunny. Highs in the mid 30s. West Winds 10 to 15 Mph.

Tonight 12 Dec Western Chester

Mostly clear in the Evening, then becoming mostly cloudy. Cold with Lows in the lower 20s. West Winds around 5 Mph, becoming south after midnight.

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Wallace Temperature Statistics

December Temperature

Chester County Airport (9.3 miles)

  • Lowest 9 December, 2025

    12.2 °F

  • Average December

    30.1 °F

  • Highest 1 December, 2025

    41 °F

Climate (2020–Present)

Chester County Airport (9.3 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    63 °F
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