Seneca Castle Weather Forecast

    • 35
    • 61

    Sunny

    • 38
    • 64

    Sunny

    • 36
    • 59

    Mostly Sunny

    • 37
    • 59

    Mostly Sunny

    • 41
    • 60

    Partly Sunny

    • 38
    • 56

    Mostly Sunny

Today 18 Oct Ontario

Sunny. Highs Ranging from the upper 50s on the Hilltops to the lower 60s across the lower Elevations. Light southwest Winds.

Tonight 18 Oct Ontario

Clear with patchy frost developing overnight. Lows in the mid 30s. Light southwest Winds.

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Seneca Castle Temperature Statistics

October Temperature

Penn Yan, Penn Yan Airport (16.8 miles)

  • Lowest 6 October, 2026

    39.9 °F

  • Average October

    57 °F

  • Highest 13 October, 2026

    84 °F

Climate (2021–2026)

Penn Yan, Penn Yan Airport (16.8 miles)

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  • Average Low 2021–2026

    41.6 °F

  • Average 2021–2026

    50.2 °F

  • Average High 2021–2026

    58.9 °F
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