Allentown Weather Forecast

    • 63
    • 84

    Becoming Sunny

    • 58
    • 78

    Mostly Sunny

    • 58
    • 81

    Mostly Sunny

    • 57
    • 80

    Mostly Sunny

    • 60
    • 83

    Mostly Sunny

    • 63
    • 86

    Chance Rain Showers

    • 63
    • 84

    Chance Rain Showers

Today 17 Sep Allegheny

Patchy fog early. Mainly sunny. Highs in the upper 70s. Northeast Winds 5 to 10 Mph.

Tonight 17 Sep Allegheny

Clear. Lows in the upper 50s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Allentown Temperature Statistics

September Temperature

Pittsburgh - Allegheny County Airport (5.6 miles)

  • Lowest 5 September, 2019

    55 °F
  • Average September

    69.5 °F
  • Highest 11 September, 2019

    89.1 °F

Climate (2010–Present)

Pittsburgh - Allegheny County Airport (5.6 miles)

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  • Average Low 2010–Present

    45.7 °F
  • Average 2010–Present

    53.6 °F
  • Average High 2010–Present

    62.1 °F
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