Crystal Lake Weather Forecast

    • 52
    • 75

    Rain Showers

    • 47
    • 66

    Becoming Sunny

    • 53
    • 70

    Partly Sunny

    • 56
    • 73

    Rain Showers

    • 58
    • 78

    Rain Showers

    • 53
    • 73

    Slight Chance Thunderstorms

    • 53
    • 72

    Mostly Sunny

Today 14 Jun Sullivan

Mostly cloudy with a chance of Showers and Thunderstorms. Some Thunderstorms may be severe with damaging Winds, large Hail, and frequent lightning. Very warm with Highs in the lower 80s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

Tonight 14 Jun Sullivan

Showers with a chance of Thunderstorms this Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Some Thunderstorms may produce damaging Winds, then some Thunderstorms may be severe with damaging Winds after midnight. Cooler with Lows in the lower 50s. Southwest Winds 10 to 15 Mph, becoming north after midnight. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

June Temperature

Williamsport - Lycoming County Airport (14.3 miles)

  • Lowest 1 June, 2026

    45.6 °F

  • Average June

    70.5 °F

  • Highest 11 June, 2026

    92.6 °F

Climate (2021–Present)

Williamsport - Lycoming County Airport (14.3 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    63.3 °F
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