Seneca Castle Weather Forecast

    • 57
    • 78

    Partly Sunny

    • 54
    • 76

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

    • 59
    • 82

    Partly Sunny

    • 58
    • 82

    Mostly Sunny

Today 13 Sep Ontario

Partly sunny. Highs Ranging from the lower 70s on the Hilltops to the upper 70s across the lower Elevations. Light Winds.

Tonight 13 Sep Ontario

Partly cloudy. Lows in the upper 50s. Light west Winds.

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Seneca Castle Temperature Statistics

September Temperature

Penn Yan, Penn Yan Airport (16.8 miles)

  • Lowest 8 September, 2025

    45 °F

  • Average September

    61.7 °F

  • Highest 3 September, 2025

    81 °F

Climate (2020–Present)

Penn Yan, Penn Yan Airport (16.8 miles)

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  • Average Low 2020–2025

    42.1 °F

  • Average 2020–2025

    50.6 °F

  • Average High 2020–2025

    59.3 °F
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