Mertztown Weather Forecast

    • 59
    • 68

    Rain Showers Likely

    • 58
    • 80

    Mostly Sunny

    • 52
    • 80

    Mostly Sunny

    • 51
    • 73

    Mostly Sunny

    • 52
    • 74

    Partly Sunny

    • 58
    • 78

    Partly Sunny

Today 17 Sep Berks

Cloudy with a chance of Thunderstorms. A chance of Showers late this Morning, then Showers likely this afternoon. Highs in the upper 60s. Northeast Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent.

Tonight 17 Sep Berks

Mostly cloudy. A chance of Showers and Thunderstorms in the evening. Lows around 60. Northeast Winds 5 to 10 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mertztown Temperature Statistics

September Temperature

Allentown Queen City Municipal Airport (9.9 miles)

  • Lowest 9 September, 2025

    46.4 °F

  • Average September

    67.4 °F

  • Highest 4 September, 2025

    82.4 °F

Climate (2020–Present)

Allentown Queen City Municipal Airport (9.9 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    55 °F

  • Average High 2020–2025

    64.1 °F
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