Octoraro Lake Weather Forecast

    • 49
    • 66

    Increasing Clouds

    • 50
    • 71

    Rain Showers

    • 47
    • 64

    Partly Sunny

    • 51
    • 69

    Partly Sunny

    • 58
    • 79

    Mostly Sunny

    • 60
    • 84

    Partly Sunny

Today 12 May Lancaster

Sunny. Highs in the upper 60s. Northwest Winds around 5 Mph.

Tonight 12 May Lancaster

Partly cloudy in the Evening, then becoming mostly cloudy. Not as cool with Lows around 50. South Winds 10 to 15 Mph.

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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

    56.9 °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

    45.8 °F

  • Average 2021–2026

    54.4 °F

  • Average High 2021–2026

    63 °F
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