Jefferson Memorial Park Weather Forecast

    • 68
    • 90

    Slight Chance Thunderstorms

    • 67
    • 88

    Rain Showers

    • 67
    • 85

    Rain Showers

    • 65
    • 86

    Rain Showers Likely

    • 65
    • 85

    Chance Rain Showers

    • 64
    • 84

    Rain Showers Likely

Today 5 Aug Ontario

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

Tonight 5 Aug Ontario

Partly to mostly cloudy. Muggy with Lows in the upper 60s. Light south Winds.

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Jefferson Memorial Park Temperature Statistics

August Temperature

Penn Yan, Penn Yan Airport (19.9 miles)

  • Lowest 1 August, 2026

    63 °F

  • Average August

    71.3 °F

  • Highest 1 August, 2026

    82.9 °F

Climate (2021–2026)

Penn Yan, Penn Yan Airport (19.9 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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