Jefferson Memorial Park Weather Forecast

    • 71
    • 88

    Isolated Thunderstorms

    • 72
    • 92

    Mostly Sunny

    • 65
    • 86

    Chance Thunderstorms

    • 63
    • 81

    Slight Chance Thunderstorms

    • 64
    • 83

    Slight Chance Thunderstorms

    • 65
    • 82

    Chance Thunderstorms

Today 5 Jul Ontario

Partly sunny. Highs Ranging from the lower 80s on the Hilltops to the upper 80s across the lower Elevations. Light southwest Winds.

Tonight 5 Jul Ontario

Partly cloudy. Very warm and muggy with Lows around 70. Light Winds, becoming southwest 5 to 10 Mph.

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Jefferson Memorial Park Temperature Statistics

July Temperature

Penn Yan, Penn Yan Airport (19.9 miles)

  • Lowest 2 July, 2025

    64 °F

  • Average July

    73.3 °F

  • Highest 1 July, 2025

    84 °F

Climate (2020–Present)

Penn Yan, Penn Yan Airport (19.9 miles)

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  • Average Low 2020–2025

    42.2 °F

  • Average 2020–2025

    50.7 °F

  • Average High 2020–2025

    59.3 °F
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