Canonsburg Weather Forecast

    • 25
    • 50

    Partly Sunny

    • 33
    • 54

    Rain

    • 20
    • 36

    Snow Showers

    • 29
    • 46

    Chance Rain

    • 19
    • 37

    Partly Sunny

    • 26
    • 35

    Chance Snow

Today 17 Dec Washington

Mostly sunny. Highs in the upper 40s. Temperatures falling into the mid 40s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 17 Dec Washington

Partly cloudy. Lows in the mid 20s. South Winds around 5 Mph.

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Canonsburg Temperature Statistics

December Temperature

Washington - Washington County Airport (9.9 miles)

  • Lowest 15 December, 2025

    6.1 °F

  • Average December

    25.8 °F

  • Highest 10 December, 2025

    44.1 °F

Climate (2020–Present)

Washington - Washington County Airport (9.9 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    52.4 °F

  • Average High 2020–2025

    62.3 °F
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