Sylvan Dell Weather Forecast

    • 57
    • 84

    Mostly Sunny

    • 56
    • 83

    Partly Sunny

    • 55
    • 82

    Partly Sunny

    • 58
    • 77

    Slight Chance Rain Showers

    • 57
    • 83

    Mostly Sunny

    • 54
    • 83

    Mostly Sunny

    • 52
    • 76

    Partly Sunny

Today 14 Sep Southern Lycoming

Sunny. Highs in the lower 80s. North Winds around 5 Mph.

Tonight 14 Sep Southern Lycoming

Mostly clear. Lows in the mid 50s. Northeast Winds around 5 Mph.

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Sylvan Dell Temperature Statistics

September Temperature

Williamsport - Lycoming County Airport (1.2 miles)

  • Lowest 8 September, 2025

    44.1 °F

  • Average September

    63.7 °F

  • Highest 5 September, 2025

    82 °F

Climate (2020–Present)

Williamsport - Lycoming County Airport (1.2 miles)

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  • Average Low 2020–2025

    43.8 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    63.3 °F
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