Octoraro Lake Weather Forecast

    • 63
    • 86

    Slight Chance Thunderstorms

    • 66
    • 91

    Mostly Sunny

    • 68
    • 92

    Mostly Sunny

    • 56
    • 89

    Rain Showers

    • 50
    • 70

    Chance Rain Showers

    • 50
    • 66

    Chance Rain Showers

Today 17 May Lancaster

Mostly sunny with isolated Showers. Very warm with Highs in the upper 80s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 17 May Lancaster

Mostly clear with isolated Showers in the Evening, then partly cloudy after midnight. Lows in the mid 60s. South Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Octoraro Lake Temperature Statistics

May Temperature

Chester County Airport (14.3 miles)

  • Lowest 1 May, 2026

    36.7 °F

  • Average May

    56.5 °F

  • Highest 5 May, 2026

    78.4 °F

Climate (2021–Present)

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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