Allentown Weather Forecast

    • 66
    • 79

    Thunderstorms

    • 60
    • 79

    Partly Sunny

    • 67
    • 84

    Slight Chance Thunderstorms

    • 68
    • 85

    Rain Showers Likely

    • 68
    • 85

    Chance Thunderstorms

    • 68
    • 84

    Chance Thunderstorms

Today 2 Aug Allegheny

Scattered Showers and Thunderstorms Early, then Showers and Thunderstorms. Some Thunderstorms may produce heavy rainfall. Highs in the upper 70s. South Winds 5 to 10 Mph. Chance of rain near 100 percent.

Tonight 2 Aug Allegheny

Mostly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a slight chance of Showers and Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Humid with Lows in the mid 60s. South Winds 5 to 10 Mph, becoming west after midnight. Chance of rain 70 percent.

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Allentown Temperature Statistics

August Temperature

Pittsburgh - Allegheny County Airport (5.6 miles)

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Climate (2021–2026)

Pittsburgh - Allegheny County Airport (5.6 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    63.3 °F
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