Crystal Lake Weather Forecast

    • 34
    • 41

    Rain

    • 33
    • 42

    Rain/Snow

    • 32
    • 40

    Rain/Snow

    • 27
    • 40

    Chance Snow Showers

    • 22
    • 32

    Chance Snow Showers

    • 13
    • 28

    Slight Chance Snow Showers

Today 18 Feb Sullivan

Areas of fog in the morning. Rain. Highs in the lower 40s. South Winds around 5 Mph. Chance of rain near 100 percent.

Tonight 18 Feb Sullivan

Mostly cloudy. Lows in the mid 30s. West Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

February Temperature

Williamsport - Lycoming County Airport (14.3 miles)

  • Lowest 9 February, 2026

    -2.3 °F

  • Average February

    21.8 °F

  • Highest 14 February, 2026

    48 °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

    52.8 °F

  • Average High 2021–2026

    63.1 °F
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