Lake Wilhelm Weather Forecast

    • 24
    • 41

    Becoming Sunny

    • 51
    • 63

    Rain Showers Likely

    • 44
    • 68

    Chance Rain Showers

    • 52
    • 75

    Partly Sunny

    • 53
    • 77

    Chance Rain Showers

    • 45
    • 67

    Rain Showers Likely

Today 20 Apr Mercer

Partly sunny Early, then becoming partly cloudy. Cool with Highs in the lower 40s. Northwest Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 20 Apr Mercer

Clear. Widespread frost after midnight. Unseasonably cold with Lows in the mid 20s. North Winds 5 to 10 Mph, becoming southeast after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Wilhelm Temperature Statistics

April Temperature

Franklin, Venango Regional Airport (13.7 miles)

  • Lowest 8 April, 2026

    19.9 °F

  • Average April

    52.2 °F

  • Highest 4 April, 2026

    80.1 °F

Climate (2021–Present)

Franklin, Venango Regional Airport (13.7 miles)

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  • Average Low 2021–2026

    40.6 °F

  • Average 2021–2026

    49.3 °F

  • Average High 2021–2026

    58.2 °F
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