Octoraro Lake Weather Forecast

    • 67
    • 84

    Becoming Sunny

    • 57
    • 84

    Rain Showers

    • 50
    • 73

    Partly Sunny

    • 49
    • 72

    Mostly Sunny

    • 51
    • 74

    Mostly Sunny

    • 53
    • 73

    Mostly Sunny

Today 5 Sep Lancaster

Partly sunny this Morning, then clearing. Areas of dense fog this morning. Very warm with Highs in the mid 80s. South Winds 5 to 10 Mph.

Tonight 5 Sep Lancaster

Mostly clear. Humid with Lows in the upper 60s. South Winds 5 to 10 Mph.

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Octoraro Lake Temperature Statistics

September Temperature

Chester County Airport (14.3 miles)

  • Lowest 1 September, 2025

    53.6 °F

  • Average September

    65.5 °F

  • Highest 1 September, 2025

    78.8 °F

Climate (2020–Present)

Chester County Airport (14.3 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    63.1 °F
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