Crystal Lake Weather Forecast

    • 41
    • 63

    Increasing Clouds

    • 38
    • 56

    Mostly Sunny

    • 43
    • 57

    Mostly Cloudy

    • 46
    • 61

    Mostly Sunny

    • 46
    • 66

    Partly Sunny

    • 46
    • 61

    Mostly Cloudy

Today 26 Oct Sullivan

Patchy fog this morning. Sunny. Highs in the mid 60s. Northwest Winds around 5 Mph.

Tonight 26 Oct Sullivan

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 30s. North Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

October Temperature

Williamsport - Lycoming County Airport (14.3 miles)

  • Lowest 24 October, 2026

    30.9 °F

  • Average October

    56.5 °F

  • Highest 13 October, 2026

    84.7 °F

Climate (2021–2026)

Williamsport - Lycoming County Airport (14.3 miles)

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  • Average Low 2021–2026

    43.4 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    63.3 °F
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