Pittsburgh International Airport Weather Forecast

    • 63
    • 80

    Slight Chance Rain Showers

    • 63
    • 83

    Mostly Sunny

    • 66
    • 86

    Chance Rain Showers

    • 59
    • 82

    Chance Thunderstorms

    • 54
    • 74

    Partly Sunny

    • 51
    • 70

    Partly Sunny

Today 21 Aug Allegheny

Mostly cloudy late this Morning, then partly cloudy with a slight chance of Showers this afternoon. Highs around 80. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 21 Aug Allegheny

Partly cloudy. Humid with Lows in the lower 60s. Northeast Winds 5 to 10 Mph.

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Pittsburgh International Airport Temperature Statistics

August Temperature

Pittsburgh, Pittsburgh International Airport (1.9 miles)

  • Lowest 3 August, 2025

    53.7 °F

  • Average August

    75 °F

  • Highest 12 August, 2025

    93.7 °F

Climate (2020–Present)

Pittsburgh, Pittsburgh International Airport (1.9 miles)

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  • Average Low 2020–2025

    45.1 °F

  • Average 2020–2025

    54 °F

  • Average High 2020–2025

    63.1 °F
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