Lock Haven Weather Forecast

    • 70
    • 87

    Rain Showers Likely

    • 57
    • 80

    Rain Showers Likely

    • 55
    • 78

    Mostly Sunny

    • 65
    • 79

    Chance Rain Showers

    • 62
    • 82

    Chance Rain Showers

    • 61
    • 80

    Partly Sunny

Today 9 Sep Southern Clinton

Mostly sunny. Very warm with Highs in the mid 80s. Southwest Winds 5 to 10 Mph.

Tonight 9 Sep Southern Clinton

Mostly cloudy. Near steady temperature around 60. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lock Haven Temperature Statistics

September Temperature

Williamsport - Lycoming County Airport (28 miles)

  • Lowest 6 September, 2026

    57.9 °F

  • Average September

    74.7 °F

  • Highest 1 September, 2026

    92.6 °F

Climate (2021–2026)

Williamsport - Lycoming County Airport (28 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    63.3 °F
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