Smithville Weather Forecast

    • 8
    • 20

    Slight Chance Snow Showers

    • 16
    • 28

    Snow Showers

    • 23
    • 31

    Chance Snow Showers

    • 22
    • 39

    Chance Rain Showers

    • 23
    • 43

    Rain Showers

    • 13
    • 33

    Chance Snow Showers

Today 14 Dec Jefferson

Mostly cloudy with scattered snow Showers Early, then mostly cloudy from late morning on. Cold with Highs 15 to 20. Light Winds, becoming north 5 to 10 Mph. Chance of snow 50 percent.

Tonight 14 Dec Jefferson

Mostly cloudy. A chance of snow Showers overnight. Colder with Lows Ranging from zero to 5 above across the tug hill to 5 to 10 above along the lake Ontario shore. Northwest Winds 5 to 10 Mph, becoming light. Chance of snow 40 percent.

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Smithville Temperature Statistics

December Temperature

Watertown, Watertown International Airport (8.7 miles)

  • Lowest 5 December, 2025

    -6 °F

  • Average December

    22.4 °F

  • Highest 3 December, 2025

    36 °F

Climate (2020–Present)

Watertown, Watertown International Airport (8.7 miles)

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  • Average Low 2020–2025

    38.8 °F

  • Average 2020–2025

    48.6 °F

  • Average High 2020–2025

    57.6 °F
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