Seneca Castle Weather Forecast

    • 48
    • 66

    Chance Rain Showers

    • 45
    • 60

    Mostly Cloudy

    • 46
    • 62

    Mostly Cloudy

    • 45
    • 63

    Slight Chance Rain Showers

    • 45
    • 62

    Slight Chance Rain Showers

    • 48
    • 63

    Partly Sunny

Today 20 Sep Ontario

Mostly cloudy. A chance of Showers late this morning. Highs Ranging from the lower 60s on the Hilltops to the mid 60s across the lower Elevations. Light Winds, becoming north around 10 Mph. Chance of rain 30 percent.

Tonight 20 Sep Ontario

Mostly cloudy. Lows in the upper 40s. Light north Winds.

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Seneca Castle Temperature Statistics

September Temperature

Penn Yan, Penn Yan Airport (16.8 miles)

  • Lowest 15 September, 2026

    48 °F

  • Average September

    67.1 °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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