Lake Wilhelm Weather Forecast

    • 58
    • 79

    Chance Thunderstorms

    • 62
    • 82

    Chance Thunderstorms

    • 64
    • 83

    Rain Showers

    • 61
    • 80

    Rain Showers Likely

    • 59
    • 77

    Slight Chance Thunderstorms

    • 60
    • 80

    Partly Sunny

Today 25 Jul Mercer

Partly sunny with a slight chance of Showers in the Morning, then partly cloudy with a chance of Showers and Thunderstorms in the afternoon. Humid with Highs around 80. South Winds around 5 Mph. Chance of rain 30 percent.

Tonight 25 Jul Mercer

Partly cloudy. A chance of Showers and Thunderstorms in the evening. Patchy fog in the Evening, then Areas of fog after midnight. Lows in the upper 50s. Northwest Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Wilhelm Temperature Statistics

July Temperature

Franklin, Venango Regional Airport (13.7 miles)

  • Lowest 22 July, 2026

    48.9 °F

  • Average July

    72.7 °F

  • Highest 3 July, 2026

    93 °F

Climate (2021–2026)

Franklin, Venango Regional Airport (13.7 miles)

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  • Average Low 2021–2026

    40.6 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    58.2 °F
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