Crystal Lake Weather Forecast

    • 36
    • 54

    Increasing Clouds

    • 42
    • 53

    Rain Showers Likely

    • 44
    • 56

    Rain Showers

    • 45
    • 66

    Rain Showers

    • 38
    • 54

    Partly Sunny

    • 42
    • 56

    Chance Rain Showers

Today 7 May Sullivan

Sunny in the Morning, then becoming partly sunny. Highs in the mid 50s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 7 May Sullivan

Partly cloudy and much cooler. Near steady temperature around 40. 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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