Crystal Lake Weather Forecast

    • 55
    • 73

    Slight Chance Rain Showers

    • 59
    • 74

    Chance Rain Showers

    • 60
    • 76

    Chance Thunderstorms

    • 57
    • 76

    Chance Rain Showers

    • 52
    • 71

    Chance Rain Showers

    • 52
    • 74

    Chance Rain Showers

    • 31
    • 62

    Chance Rain Showers

Today 13 Apr Sullivan

Partly sunny with a 30 percent chance of Showers. Warmer with Highs in the lower 70s. West Winds 10 to 15 Mph with Gusts up to 35 Mph.

Tonight 13 Apr Sullivan

A slight chance of Thunderstorms late this evening. Mostly cloudy with a slight chance of Showers. Unseasonably mild. Lows in the mid 50s. West Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

April Temperature

Williamsport - Lycoming County Airport (14.3 miles)

  • Lowest 8 April, 2026

    22.6 °F

  • Average April

    50 °F

  • Highest 4 April, 2026

    76.6 °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

    63.2 °F
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