Octoraro Lake Weather Forecast

    • 67
    • 83

    Chance Rain Showers

    • 57
    • 81

    Partly Sunny

    • 60
    • 76

    Rain Showers Likely

    • 59
    • 77

    Rain Showers

    • 56
    • 70

    Chance Rain Showers

    • 54
    • 68

    Chance Rain Showers

Today 17 Sep Lancaster

Partly sunny this Morning, then becoming mostly cloudy. A chance of Showers. A slight chance of Thunderstorms this afternoon. Very warm with Highs in the mid 80s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 17 Sep Lancaster

Mostly cloudy. Showers likely with a slight chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Humid with Lows in the upper 60s. Southwest Winds around 5 Mph, becoming northwest after midnight. Chance of rain 60 percent.

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Octoraro Lake Temperature Statistics

September Temperature

Chester County Airport (14.3 miles)

  • Lowest 15 September, 2026

    50.7 °F

  • Average September

    71.2 °F

  • Highest 1 September, 2026

    87.3 °F

Climate (2021–2026)

Chester County Airport (14.3 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    54.4 °F

  • Average High 2021–2026

    63 °F
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