Williamsport Regional Airport Weather Forecast

    • 32
    • 37

    Snow

    • 26
    • 41

    Partly Sunny

    • 21
    • 43

    Mostly Cloudy

    • 24
    • 29

    Wintry Mix

    • 31
    • 36

    Rain Showers Likely

    • 23
    • 42

    Rain Showers Likely

    • 16
    • 30

    Mostly Cloudy

Today 23 Dec Southern Lycoming

Cloudy. Near steady temperature in the mid 30s. Southwest Winds around 5 Mph.

Tonight 23 Dec Southern Lycoming

Mostly cloudy. Lows in the lower 30s. West Winds 15 to 20 Mph with Gusts up to 35 Mph.

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Williamsport Regional Airport Temperature Statistics

December Temperature

Williamsport - Lycoming County Airport (0 miles)

  • Lowest 9 December, 2025

    6.1 °F

  • Average December

    27.5 °F

  • Highest 19 December, 2025

    55.9 °F

Climate (2020–Present)

Williamsport - Lycoming County Airport (0 miles)

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  • Average Low 2020–2025

    43.8 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    63.2 °F
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