Williamsport Weather Forecast

    • 63
    • 84

    Increasing Clouds

    • 69
    • 84

    Chance Thunderstorms

    • 70
    • 87

    Rain Showers

    • 68
    • 87

    Rain Showers Likely

    • 68
    • 86

    Chance Thunderstorms

    • 69
    • 88

    Partly Sunny

Today 4 Aug Southern Lycoming

Patchy fog this morning. Sunny. Highs in the lower 80s. North Winds around 5 Mph, becoming south this afternoon.

Tonight 4 Aug Southern Lycoming

Partly cloudy in the Evening, then becoming mostly cloudy. Patchy fog after midnight. Lows in the lower 60s. Southeast Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williamsport Temperature Statistics

August Temperature

Williamsport - Lycoming County Airport (3.7 miles)

  • Lowest 1 August, 2026

    63 °F

  • Average August

    74.4 °F

  • Highest 1 August, 2026

    84.9 °F

Climate (2021–2026)

Williamsport - Lycoming County Airport (3.7 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    63.3 °F
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