McElhattan Reservoir Weather Forecast

    • 55
    • 81

    Increasing Clouds

    • 56
    • 81

    Mostly Sunny

    • 56
    • 80

    Mostly Sunny

    • 56
    • 80

    Partly Sunny

    • 55
    • 78

    Partly Sunny

    • 55
    • 80

    Partly Sunny

Today 13 Sep Southern Clinton

Mostly sunny. Very warm with Highs in the lower 80s. Southwest Winds around 5 Mph.

Tonight 13 Sep Southern Clinton

Partly cloudy. Near steady temperature in the mid 50s. Light and variable Winds.

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  • Temperature Real-Time

McElhattan Reservoir Temperature Statistics

September Temperature

Williamsport - Lycoming County Airport (23.6 miles)

  • Lowest 8 September, 2025

    44.1 °F

  • Average September

    63.6 °F

  • Highest 5 September, 2025

    82 °F

Climate (2020–Present)

Williamsport - Lycoming County Airport (23.6 miles)

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  • Average Low 2020–2025

    43.9 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    63.3 °F
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