Jefferson Memorial Park Weather Forecast

    • 21
    • 26

    Snow

    • 19
    • 29

    Mostly Cloudy

    • 38
    • 41

    Rain

    • 20
    • 48

    Rain/Snow Likely

    • 22
    • 26

    Chance Snow Showers

    • 14
    • 29

    Chance Snow Showers

    • 12
    • 22

    Chance Snow Showers

Today 26 Dec Ontario

Snow Early, then Snow, sleet and freezing rain late. Snow may be heavy at Times. Additional snow and sleet accumulation 1 to 3 Inches. Additional ice accumulation of up to one tenth of an inch. Highs Ranging from the lower 20s on the Hilltops to the mid 20s across the lower Elevations. Southeast Winds 10 to 20 Mph with Gusts up to 30 Mph. Chance of precipitation near 100 percent.

Tonight 26 Dec Ontario

Snow, sleet and freezing rain Early, then snow with a chance of freezing rain late this evening. A chance of snow Showers and freezing rain after midnight. Snow may be heavy at Times early. Additional snow and sleet accumulation 1 to 3 Inches. Ice accumulation of up to one tenth of an inch. Lows in the lower 20s. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph this Evening, becoming north 10 Mph or less. Chance of precipitation near 100 percent.

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Jefferson Memorial Park Temperature Statistics

December Temperature

Penn Yan, Penn Yan Airport (19.9 miles)

  • Lowest 4 December, 2025

    3 °F

  • Average December

    27.6 °F

  • Highest 19 December, 2025

    54 °F

Climate (2020–Present)

Penn Yan, Penn Yan Airport (19.9 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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