Seneca Castle Weather Forecast

    • 27
    • 38

    Decreasing Clouds

    • 22
    • 30

    Snow Showers Likely

    • 27
    • 35

    Rain/Snow Likely

    • 28
    • 41

    Chance Rain Showers

    • 28
    • 35

    Chance Rain Showers

    • 36
    • 48

    Chance Rain Showers

Today 20 Dec Ontario

Mostly cloudy. Highs Ranging from the mid 30s on the Hilltops to the upper 30s across the lower Elevations. South Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 20 Dec Ontario

Mostly cloudy. Lows Ranging from the lower 20s on the Hilltops to the upper 20s across the lower Elevations. South Winds 10 to 20 Mph with Gusts up to 35 Mph, becoming west.

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Seneca Castle Temperature Statistics

December Temperature

Penn Yan, Penn Yan Airport (16.8 miles)

  • Lowest 4 December, 2025

    3 °F

  • Average December

    25.9 °F

  • Highest 18 December, 2025

    50 °F

Climate (2020–Present)

Penn Yan, Penn Yan Airport (16.8 miles)

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  • Average Low 2020–2025

    42 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    59.2 °F
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