Williamsport Weather Forecast

    • 48
    • 77

    Mostly Sunny

    • 43
    • 69

    Partly Sunny

    • 49
    • 66

    Mostly Cloudy

    • 51
    • 71

    Chance Rain

    • 51
    • 69

    Rain Likely

    • 54
    • 76

    Rain Likely

Today 29 Oct Pickaway

Rain likely. Highs around 70. Chance of rain 60 percent.

Tonight 29 Oct Pickaway

Mostly clear. Lows in the upper 40s. Southwest Winds 5 to 10 Mph, becoming northwest after midnight.

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Williamsport Temperature Statistics

October Temperature

Chillicothe Ross County Airport (11.2 miles)

  • Lowest 18 October, 2026

    32 °F

  • Average October

    56.1 °F

  • Highest 1 October, 2026

    86 °F

Climate (2021–2026)

Chillicothe Ross County Airport (11.2 miles)

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  • Average Low 2021–2026

    43.4 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    64.5 °F
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