Williamsport Weather Forecast

    • 17
    • 31

    Chance Snow

    • 31
    • 41

    Mostly Cloudy

    • 29
    • 50

    Chance Rain

    • 24
    • 37

    Mostly Cloudy

    • 17
    • 37

    Chance Snow

    • 12
    • 26

    Mostly Cloudy

Today 8 Dec Eastern Grant

Cloudy with a 50 percent chance of snow. Snow accumulation up to 1 inch possible. Highs in the upper 20s. Northeast Winds 5 to 10 Mph.

Tonight 8 Dec Eastern Grant

Mostly cloudy in the Evening, then becoming partly cloudy. Cold with Lows around 15. Northeast Winds around 5 Mph, becoming south after midnight.

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Williamsport Temperature Statistics

December Temperature

Petersburg, Grant County Airport (16.2 miles)

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  • Average December

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Climate (2020–Present)

Petersburg, Grant County Airport (16.2 miles)

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  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    55.5 °F

  • Average High 2020–2025

    67.5 °F
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