Crystal Lake Weather Forecast

    • 37
    • 64

    Rain Showers

    • 32
    • 52

    Mostly Sunny

    • 46
    • 54

    Mostly Cloudy

    • 54
    • 66

    Chance Rain Showers

    • 57
    • 71

    Chance Rain Showers

    • 57
    • 76

    Chance Rain Showers

    • 51
    • 72

    Slight Chance Rain Showers

Today 10 Apr Sullivan

Partly sunny. Near steady temperature in the mid 60s. Southwest Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 10 Apr Sullivan

Mostly cloudy. Showers likely with a slight chance of Thunderstorms this Evening, then a chance of Showers after midnight. Lows in the upper 30s. Southwest Winds 5 to 10 Mph, becoming north 10 to 15 Mph after midnight. Gusts up to 30 Mph. Chance of rain 70 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

    23 °F

  • Average April

    48.6 °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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