Tionesta Lake Weather Forecast

    • 60
    • 77

    Increasing Clouds

    • 66
    • 81

    Chance Rain Showers

    • 59
    • 79

    Rain Showers

    • 52
    • 75

    Slight Chance Rain Showers

    • 60
    • 73

    Rain Showers Likely

    • 59
    • 75

    Chance Rain Showers

    • 57
    • 73

    Chance Rain Showers

Today 15 Sep Forest

Mostly sunny. Near steady temperature in the mid 70s. South Winds around 5 Mph with Gusts up to 20 Mph.

Tonight 15 Sep Forest

Mainly clear. Lows in the upper 50s. Southeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tionesta Lake Temperature Statistics

September Temperature

Franklin, Venango Regional Airport (23.6 miles)

  • Lowest 6 September, 2026

    52 °F

  • Average September

    69.2 °F

  • Highest 2 September, 2026

    87.1 °F

Climate (2021–2026)

Franklin, Venango Regional Airport (23.6 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    58.2 °F
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