Waterville Weather Forecast

    • 50
    • 71

    Increasing Clouds

    • 53
    • 71

    Mostly Cloudy

    • 53
    • 67

    Chance Rain

    • 53
    • 69

    Mostly Cloudy

    • 52
    • 72

    Partly Sunny

    • 55
    • 73

    Mostly Cloudy

Today 25 Sep Northern Lycoming

Sunny. Highs in the upper 60s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 25 Sep Northern Lycoming

Partly cloudy. Lows in the upper 40s. North Winds 10 to 15 Mph with Gusts up to 30 Mph.

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Waterville Temperature Statistics

September Temperature

Williamsport - Lycoming County Airport (23 miles)

  • Lowest 15 September, 2026

    47.6 °F

  • Average September

    69.6 °F

  • Highest 1 September, 2026

    92.6 °F

Climate (2021–2026)

Williamsport - Lycoming County Airport (23 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    63.3 °F
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