Octoraro Lake Weather Forecast

    • 42
    • 50

    Rain

    • 23
    • 56

    Rain Likely

    • 32
    • 39

    Partly Sunny

    • 22
    • 44

    Mostly Sunny

    • 23
    • 36

    Mostly Cloudy

    • 33
    • 40

    Slight Chance Rain

    • 31
    • 45

    Partly Sunny

Today 18 Dec Lancaster

Partly sunny. Near steady temperature in the mid 40s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 18 Dec Lancaster

A chance of rain this Evening, then rain after midnight. Breezy, mild. Lows in the lower 40s. Temperature rising into the lower 50s after midnight. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph, becoming south 15 to 25 Mph with Gusts up to 45 Mph after midnight. Chance of rain near 100 percent.

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Octoraro Lake Temperature Statistics

December Temperature

Chester County Airport (14.3 miles)

  • Lowest 16 December, 2025

    8.6 °F

  • Average December

    28.4 °F

  • Highest 1 December, 2025

    41 °F

Climate (2020–Present)

Chester County Airport (14.3 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    63 °F
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