Seneca Castle Weather Forecast

    • 56
    • 78

    Slight Chance Thunderstorms

    • 67
    • 89

    Slight Chance Thunderstorms

    • 65
    • 86

    Rain Showers Likely

    • 44
    • 76

    Chance Rain Showers

    • 42
    • 57

    Mostly Cloudy

    • 47
    • 65

    Mostly Cloudy

Today 17 May Ontario

Mostly sunny and warm with Highs in the upper 70s. Light west Winds.

Tonight 17 May Ontario

Partly cloudy and mild with Lows in the upper 50s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Seneca Castle Temperature Statistics

May Temperature

Penn Yan, Penn Yan Airport (16.8 miles)

  • Lowest 7 May, 2026

    32 °F

  • Average May

    49 °F

  • Highest 4 May, 2026

    73 °F

Climate (2021–Present)

Penn Yan, Penn Yan Airport (16.8 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    50.4 °F

  • Average High 2021–2026

    59.1 °F
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