Crystal Lake Weather Forecast

    • 26
    • 43

    Mostly Sunny

    • 41
    • 47

    Chance Rain

    • 45
    • 68

    Chance Rain

    • 40
    • 58

    Chance Rain

    • 43
    • 47

    Rain Likely

    • 35
    • 54

    Rain Likely

Today 1 Apr Sullivan

Partly sunny this Morning, then clearing. Much cooler with Highs in the lower 40s. North Winds 10 to 15 Mph with Gusts up to 35 Mph.

Tonight 1 Apr Sullivan

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 20s. North Winds 10 to 15 Mph.

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Crystal Lake Temperature Statistics

April Temperature

Williamsport - Lycoming County Airport (14.3 miles)

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  • Average April

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Climate (2020–Present)

Williamsport - Lycoming County Airport (14.3 miles)

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  • Average Low 2020–2025

    43.8 °F

  • Average 2020–2025

    52.9 °F

  • Average High 2020–2025

    63.2 °F
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