Gravely Bay Weather Forecast

    • 23
    • 38

    Rain/Snow Likely

    • 13
    • 28

    Snow

    • 16
    • 22

    Mostly Cloudy

    • 30
    • 35

    Rain/Snow

    • 27
    • 39

    Rain/Snow

    • 24
    • 30

    Snow Showers Likely

    • 20
    • 28

    Snow Showers Likely

Today 6 Dec Jefferson

Snow Showers. Accumulation an inch or less. Highs Ranging from the lower 30s inland to the upper 30s along the lake Ontario shore. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of snow 80 percent.

Tonight 6 Dec Jefferson

Mostly cloudy. Snow Showers likely in the evening. Additional accumulation Ranging from an inch or less across the lower Elevations to 2 to 3 Inches on the tug hill. Lows 10 to 15. West Winds 5 to 10 Mph, becoming light. Chance of snow 70 percent.

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Gravely Bay Temperature Statistics

December Temperature

Watertown, Watertown International Airport (16.8 miles)

  • Lowest 4 December, 2025

    -2 °F
  • Average December

    23.4 °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

    38.9 °F
  • Average 2020–2025

    48.6 °F
  • Average High 2020–2025

    57.6 °F
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