Watertown Weather Forecast

    • 14
    • 34

    Snow Showers

    • 4
    • 24

    Snow Likely

    • 4
    • 16

    Slight Chance Snow Showers

    • 24
    • 31

    Snow Showers

    • 21
    • 36

    Rain/Snow

    • 12
    • 28

    Snow Showers Likely

Today 6 Dec Jefferson

Partly sunny with a chance of snow Showers this Morning, then snow Showers this afternoon. Accumulation an inch or less. Highs Ranging from the lower 30s inland to the upper 30s along the lake Ontario shore. South Winds 10 to 15 Mph with Gusts up to 30 Mph, becoming southwest. Chance of snow near 100 percent.

Tonight 6 Dec Jefferson

Mostly cloudy. Snow Showers in the evening. Additional accumulation Ranging from an inch or less across the lower Elevations to around 2 Inches on the tug hill. Lows 10 to 15. West Winds 5 to 10 Mph, becoming light. Chance of snow 90 percent.

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Watertown Temperature Statistics

December Temperature

Watertown, Watertown International Airport (5.6 miles)

  • Lowest 3 December, 2025

    12 °F

  • Average December

    25.5 °F

  • Highest 3 December, 2025

    36 °F

Climate (2020–Present)

Watertown, Watertown International Airport (5.6 miles)

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  • Average Low 2020–2025

    38.9 °F

  • Average 2020–2025

    48.6 °F

  • Average High 2020–2025

    57.6 °F
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