Harleysville Weather Forecast

    • 67
    • 84

    Chance Rain Showers

    • 55
    • 82

    Partly Sunny

    • 59
    • 76

    Rain Showers Likely

    • 58
    • 74

    Rain Showers

    • 56
    • 72

    Chance Rain Showers

    • 55
    • 68

    Chance Rain Showers

Today 17 Sep Western Montgomery

Partly sunny. A slight chance of Showers in the afternoon. Humid with Highs in the mid 80s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 17 Sep Western Montgomery

Mostly cloudy. A chance of Showers in the evening. Humid with Lows in the upper 60s. Southwest Winds around 5 Mph, becoming west after midnight. Chance of rain 30 percent.

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  • Temperature Real-Time

Harleysville Temperature Statistics

September Temperature

Pottstown, Pottstown Limerick Airport (9.3 miles)

  • Lowest 8 September, 2026

    54 °F

  • Average September

    72 °F

  • Highest 1 September, 2026

    88 °F

Climate (2021–2026)

Pottstown, Pottstown Limerick Airport (9.3 miles)

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  • Average Low 2021–2026

    44.6 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    64.5 °F
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