Williamsport Weather Forecast

    • 66
    • 88

    Becoming Sunny

    • 70
    • 91

    Mostly Sunny

    • 71
    • 93

    Chance Thunderstorms

    • 71
    • 91

    Rain Showers Likely

    • 69
    • 88

    Rain Showers Likely

    • 68
    • 91

    Slight Chance Thunderstorms

Today 23 Jul Eastern Grant

Patchy fog this morning. Mostly sunny. Highs in the mid 80s. South Winds 5 to 10 Mph.

Tonight 23 Jul Eastern Grant

Partly cloudy in the Evening, then becoming mostly clear. Lows in the mid 60s. South Winds around 5 Mph.

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Williamsport Temperature Statistics

July Temperature

Petersburg, Grant County Airport (16.2 miles)

  • Lowest 6 July, 2025

    60.1 °F

  • Average July

    75.9 °F

  • Highest 7 July, 2025

    92.1 °F

Climate (2020–Present)

Petersburg, Grant County Airport (16.2 miles)

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  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    55.4 °F

  • Average High 2020–2025

    67.6 °F
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