Crystal Lake Weather Forecast

    • 56
    • 79

    Rain Showers Likely

    • 51
    • 68

    Decreasing Clouds

    • 40
    • 71

    Rain Showers

    • 28
    • 47

    Rain Showers Likely

    • 24
    • 39

    Partly Sunny

    • 40
    • 52

    Chance Rain Showers

    • 37
    • 59

    Slight Chance Rain Showers

Today 16 Apr Sullivan

Partly sunny. Continued Unseasonably warm. Near steady temperature in the upper 70s. Southwest Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 16 Apr Sullivan

Mostly cloudy. Showers Likely, mainly this evening. Unseasonably mild. Lows in the mid 50s. West Winds 5 to 10 Mph with Gusts up to 25 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

    22.6 °F

  • Average April

    51.2 °F

  • Highest 13 April, 2026

    82 °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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