Clayton Weather Forecast

    • 2
    • 17

    Partly Sunny

    • 12
    • 26

    Snow Showers

    • 24
    • 30

    Chance Rain Showers

    • 18
    • 38

    Chance Rain Showers

    • 22
    • 41

    Rain Showers

    • 10
    • 30

    Chance Snow Showers

Today 14 Dec Jefferson

Mostly cloudy Early, then becoming partly sunny. Cold with near steady Temperatures Ranging from between 10 and 15 inland to between 15 and 20 along the lake Ontario shore. North Winds 5 to 10 Mph.

Tonight 14 Dec Jefferson

Mostly cloudy. Scattered Flurries overnight. Much Colder with Lows Ranging from zero to 5 below across the tug hill to zero to 5 above along the lake Ontario shore. Northwest Winds 5 to 10 Mph, becoming light.

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Clayton Temperature Statistics

December Temperature

Watertown, Watertown International Airport (16.8 miles)

  • Lowest 5 December, 2025

    -6 °F

  • Average December

    22.6 °F

  • Highest 3 December, 2025

    36 °F

Climate (2020–Present)

Watertown, Watertown International Airport (16.8 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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