Crystal Lake Weather Forecast

    • 60
    • 77

    Rain Showers

    • 50
    • 75

    Rain Showers

    • 48
    • 63

    Chance Rain Showers

    • 41
    • 62

    Partly Sunny

    • 43
    • 61

    Chance Rain Showers

Today 16 May Sullivan

Patchy fog this morning. Mostly cloudy with Showers with a chance of Thunderstorms this Morning, then partly sunny with a chance of Showers with a slight chance of Thunderstorms this afternoon. Some Thunderstorms may produce gusty Winds and small hail this morning. Highs in the upper 70s. Southwest Winds 5 to 10 Mph. Chance of rain 80 percent.

Tonight 16 May Sullivan

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. Lows around 60. Southwest Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

May Temperature

Williamsport - Lycoming County Airport (14.3 miles)

  • Lowest 12 May, 2025

    42.7 °F

  • Average May

    61.9 °F

  • Highest 2 May, 2025

    81.6 °F

Climate (2020–Present)

Williamsport - Lycoming County Airport (14.3 miles)

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  • Average Low 2020–2025

    44 °F

  • Average 2020–2025

    53.1 °F

  • Average High 2020–2025

    63.4 °F
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