Allentown Weather Forecast

    • 57
    • 77

    Chance Thunderstorms

    • 58
    • 81

    Mostly Sunny

    • 60
    • 84

    Mostly Sunny

    • 64
    • 85

    Partly Sunny

    • 64
    • 84

    Rain Showers Likely

    • 54
    • 76

    Chance Rain Showers

Today 18 May Allegheny

Mostly cloudy early this Morning, then becoming partly cloudy. Patchy fog early this morning. A slight chance of Thunderstorms early. A slight chance of Showers early this morning. A chance of Showers with a slight chance of Thunderstorms this afternoon. Highs in the upper 70s. Light and variable Winds, becoming east around 5 Mph this afternoon. Chance of rain 40 percent.

Tonight 18 May Allegheny

Mainly clear. A slight chance of Showers and Thunderstorms in the evening. Lows in the mid 50s. East Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Allentown Temperature Statistics

May Temperature

Pittsburgh - Allegheny County Airport (5.6 miles)

  • Lowest 11 May, 2024

    42.7 °F

  • Average May

    65 °F

  • Highest 2 May, 2024

    85.6 °F

Climate (2019–Present)

Pittsburgh - Allegheny County Airport (5.6 miles)

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  • Average Low 2019–2024

    46 °F

  • Average 2019–2024

    54.2 °F

  • Average High 2019–2024

    62.8 °F
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