Seneca Castle Weather Forecast

    • 51
    • 69

    Decreasing Clouds

    • 53
    • 73

    Partly Sunny

    • 62
    • 77

    Mostly Cloudy

    • 64
    • 83

    Chance Rain Showers

    • 53
    • 73

    Partly Sunny

    • 51
    • 66

    Mostly Sunny

Today 6 Sep Ontario

Some patchy fog Early, otherwise partly sunny. Highs Ranging from the mid 60s on the Hilltops to around 70 across the lower Elevations. Light Winds, becoming north around 10 Mph.

Tonight 6 Sep Ontario

Mainly clear with some patchy fog developing. Lows in the lower 50s. Light Winds.

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Seneca Castle Temperature Statistics

September Temperature

Penn Yan, Penn Yan Airport (16.8 miles)

  • Lowest 2 September, 2026

    66.9 °F

  • Average September

    73.5 °F

  • Highest 1 September, 2026

    82.9 °F

Climate (2021–2026)

Penn Yan, Penn Yan Airport (16.8 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    50.3 °F

  • Average High 2021–2026

    59 °F
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