Crystal Lake Weather Forecast

    • 55
    • 76

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

    • 59
    • 80

    Partly Sunny

    • 66
    • 81

    Rain Showers Likely

    • 66
    • 88

    Chance Thunderstorms

    • 63
    • 86

    Chance Thunderstorms

    • 61
    • 83

    Chance Rain Showers

Today 7 Jun Sullivan

Mostly sunny. Near steady temperature in the mid 70s. North Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 7 Jun Sullivan

Mostly clear this Evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the mid 50s. North Winds 5 to 10 Mph with Gusts up to 25 Mph.

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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

    65.8 °F

  • Highest 5 June, 2026

    89.1 °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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