Seneca Castle Weather Forecast

    • 41
    • 56

    Increasing Clouds

    • 45
    • 65

    Rain Showers Likely

    • 38
    • 59

    Mostly Cloudy

    • 37
    • 54

    Partly Sunny

    • 40
    • 54

    Mostly Cloudy

    • 42
    • 58

    Chance Rain Showers

    • 44
    • 61

    Slight Chance Rain Showers

Today 8 May Ontario

Partly to mostly sunny. Cool with Highs Ranging from around 50 on the Hilltops to the mid 50s across the lower Elevations. West Winds 10 Mph or less.

Tonight 8 May Ontario

Mainly clear Early, then becoming mostly cloudy. Lows in the lower 40s. Light south 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 1 May, 2026

    35.1 °F

  • Average May

    50.5 °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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