Octoraro Lake Weather Forecast

    • 45
    • 62

    Rain

    • 48
    • 56

    Rain

    • 55
    • 68

    Rain Showers Likely

    • 58
    • 75

    Chance Rain Showers

    • 59
    • 77

    Slight Chance Rain Showers

    • 59
    • 80

    Slight Chance Thunderstorms

Today 22 May Lancaster

Cloudy. A slight chance of rain this Morning, then a chance of rain this afternoon. Highs in the lower 60s. East Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 22 May Lancaster

Cloudy. A chance of rain in the Evening, then rain after midnight. Lows in the upper 40s. East Winds 10 to 15 Mph. Chance of rain 90 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

    60.4 °F

  • Highest 19 May, 2026

    92.1 °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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