Crystal Lake Weather Forecast

    • 39
    • 55

    Rain Showers Likely

    • 35
    • 54

    Partly Sunny

    • 42
    • 53

    Rain Showers Likely

    • 45
    • 57

    Chance Rain Showers

    • 44
    • 66

    Rain Showers Likely

    • 38
    • 56

    Slight Chance Rain Showers

Today 6 May Sullivan

Showers likely with a slight chance of Thunderstorms. Much cooler with Highs in the mid 50s. West Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

Tonight 6 May Sullivan

Mostly cloudy. Much cooler with Lows in the upper 30s. North Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

May Temperature

Williamsport - Lycoming County Airport (14.3 miles)

  • Lowest 4 May, 2026

    35.1 °F

  • Average May

    51.1 °F

  • Highest 4 May, 2026

    75.9 °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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