Grand Valley Weather Forecast

    • 33
    • 66

    Mostly Sunny

    • 32
    • 63

    Mostly Sunny

    • 29
    • 61

    Mostly Sunny

    • 32
    • 64

    Mostly Sunny

    • 38
    • 66

    Partly Sunny

    • 41
    • 68

    Partly Sunny

    • 37
    • 63

    Mostly Cloudy

Today 21 Oct Warren

Partly sunny. Highs in the lower 60s.

Tonight 21 Oct Warren

Mostly clear. Areas of frost with patchy fog after midnight. Lows in the lower 30s. North Winds around 5 Mph.

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Grand Valley Temperature Statistics

October Temperature

Franklin, Venango Regional Airport (28.6 miles)

  • Lowest 18 October, 2026

    27 °F

  • Average October

    55.5 °F

  • Highest 13 October, 2026

    81 °F

Climate (2021–2026)

Franklin, Venango Regional Airport (28.6 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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