Harristown Weather Forecast

    • 57
    • 82

    Mostly Sunny

    • 55
    • 82

    Partly Sunny

    • 56
    • 82

    Mostly Sunny

    • 59
    • 85

    Mostly Sunny

    • 58
    • 84

    Partly Sunny

    • 61
    • 82

    Mostly Cloudy

    • 64
    • 79

    Chance Rain Showers

Today 11 Sep Lancaster

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

Tonight 11 Sep Lancaster

Mostly clear. Lows in the mid 50s. Southeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harristown Temperature Statistics

September Temperature

Chester County Airport (11.2 miles)

  • Lowest 8 September, 2024

    46.4 °F

  • Average September

    64.4 °F

  • Highest 1 September, 2024

    82.4 °F

Climate (2019–Present)

Chester County Airport (11.2 miles)

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  • Average Low 2019–2024

    46.2 °F

  • Average 2019–2024

    54.6 °F

  • Average High 2019–2024

    63 °F
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