Pen Argyl Weather Forecast

    • 58
    • 82

    Mostly Sunny

    • 57
    • 80

    Increasing Clouds

    • 57
    • 78

    Chance Rain Showers

    • 59
    • 74

    Chance Rain Showers

    • 59
    • 80

    Mostly Sunny

    • 55
    • 82

    Mostly Sunny

    • 51
    • 74

    Partly Sunny

Today 14 Sep Northampton

Sunny. Highs in the lower 80s. North Winds around 5 Mph.

Tonight 14 Sep Northampton

Partly cloudy this Evening, then clearing. Patchy fog after midnight. Lows in the upper 50s. Northeast Winds around 5 Mph.

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Pen Argyl Temperature Statistics

September Temperature

Allentown, Lehigh Valley International Airport (18 miles)

  • Lowest 8 September, 2025

    48 °F

  • Average September

    66.5 °F

  • Highest 4 September, 2025

    82.9 °F

Climate (2020–Present)

Allentown, Lehigh Valley International Airport (18 miles)

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  • Average Low 2020–2025

    43.7 °F

  • Average 2020–2025

    53.7 °F

  • Average High 2020–2025

    63.5 °F
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