Canonsburg Weather Forecast

    • 66
    • 86

    Rain Showers Likely

    • 66
    • 79

    Chance Rain Showers

    • 69
    • 83

    Rain Showers

    • 63
    • 82

    Rain Showers Likely

    • 64
    • 81

    Slight Chance Thunderstorms

    • 69
    • 86

    Chance Thunderstorms

Today 17 Jul Washington

Partly sunny. Showers likely with a chance of Thunderstorms this afternoon. Highs in the mid 80s. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

Tonight 17 Jul Washington

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then a slight chance of Showers after midnight. Humid with Lows in the mid 60s. West Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming northwest after midnight. Chance of rain 50 percent.

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Canonsburg Temperature Statistics

July Temperature

Washington - Washington County Airport (9.9 miles)

  • Lowest 4 July, 2025

    61 °F

  • Average July

    74.5 °F

  • Highest 5 July, 2025

    89.1 °F

Climate (2020–Present)

Washington - Washington County Airport (9.9 miles)

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  • Average Low 2020–2025

    42.6 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    62.6 °F
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