Lock Haven Weather Forecast

    • 56
    • 78

    Gradual Clearing

    • 58
    • 86

    Mostly Sunny

    • 63
    • 87

    Chance Thunderstorms

    • 61
    • 82

    Rain Showers

    • 53
    • 80

    Chance Rain Showers

    • 50
    • 75

    Mostly Sunny

Today 21 Aug Southern Clinton

Cloudy. A chance of Showers in the morning. Highs in the lower 70s. Northeast Winds around 5 Mph. Chance of rain 30 percent.

Tonight 21 Aug Southern Clinton

Cloudy with a 30 percent chance of Showers. Near steady temperature in the lower 60s. East Winds around 5 Mph.

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Lock Haven Temperature Statistics

August Temperature

Williamsport - Lycoming County Airport (28 miles)

  • Lowest 2 August, 2025

    51.7 °F

  • Average August

    73.2 °F

  • Highest 12 August, 2025

    93.7 °F

Climate (2020–Present)

Williamsport - Lycoming County Airport (28 miles)

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  • Average Low 2020–2025

    43.9 °F

  • Average 2020–2025

    53.1 °F

  • Average High 2020–2025

    63.3 °F
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