Williamsport Weather Forecast

    • 23
    • 37

    Increasing Clouds

    • 23
    • 43

    Rain/Snow

    • 17
    • 27

    Partly Sunny

    • 17
    • 30

    Mostly Cloudy

    • 24
    • 39

    Mostly Cloudy

    • 33
    • 48

    Mostly Cloudy

Today 12 Dec Washington

Partly sunny. Highs in the mid 30s. West Winds around 5 Mph.

Tonight 12 Dec Washington

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 20s. Southeast Winds around 5 Mph.

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Williamsport Temperature Statistics

December Temperature

Hagerstown, Washington County Regional Airport (8.7 miles)

  • Lowest 9 December, 2025

    14 °F

  • Average December

    32.4 °F

  • Highest 7 December, 2025

    44.6 °F

Climate (2020–Present)

Hagerstown, Washington County Regional Airport (8.7 miles)

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  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    56.8 °F

  • Average High 2020–2025

    65.8 °F
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