McDonald Weather Forecast

    • 62
    • 78

    Rain Showers Likely

    • 58
    • 76

    Rain Showers Likely

    • 61
    • 79

    Partly Sunny

    • 61
    • 78

    Rain Showers Likely

    • 58
    • 74

    Chance Thunderstorms

    • 59
    • 76

    Partly Sunny

Today 19 Aug Washington

Mostly sunny in the Morning, then mostly cloudy with a slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the upper 70s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 19 Aug Washington

Mostly cloudy with a slight chance of Thunderstorms. A chance of Showers in the Evening, then Showers likely after midnight. Patchy fog after midnight. Humid with Lows in the lower 60s. West Winds 5 to 10 Mph in the Evening, becoming light and variable. Chance of rain 70 percent.

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McDonald Temperature Statistics

August Temperature

Pittsburgh, Pittsburgh International Airport (9.3 miles)

  • Lowest 4 August, 2026

    58.6 °F

  • Average August

    74.3 °F

  • Highest 4 August, 2026

    86.6 °F

Climate (2021–2026)

Pittsburgh, Pittsburgh International Airport (9.3 miles)

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  • Average Low 2021–2026

    45 °F

  • Average 2021–2026

    54.1 °F

  • Average High 2021–2026

    63.4 °F
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