Crystal Lake Weather Forecast

    • 62
    • 80

    Becoming Sunny

    • 69
    • 88

    Mostly Sunny

    • 65
    • 90

    Mostly Sunny

    • 62
    • 83

    Partly Sunny

    • 61
    • 81

    Partly Sunny

    • 60
    • 78

    Chance Rain Showers

Today 13 Jul Sullivan

Sunny. Very warm with Highs in the lower 80s. Southwest Winds around 5 Mph.

Tonight 13 Jul Sullivan

Mostly clear. Lows in the lower 60s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

July Temperature

Williamsport - Lycoming County Airport (14.3 miles)

  • Lowest 9 July, 2026

    66.9 °F

  • Average July

    79.9 °F

  • Highest 2 July, 2026

    100.7 °F

Climate (2021–2026)

Williamsport - Lycoming County Airport (14.3 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    63.3 °F
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