Wellesley Island Weather Forecast

    • 9
    • 38

    Snow

    • 2
    • 14

    Mostly Cloudy

    • 0
    • 11

    Chance Snow Showers

    • -3
    • 11

    Chance Snow Showers

    • 5
    • 14

    Chance Snow Showers

    • 15
    • 23

    Chance Snow Showers

Today 18 Jan Jefferson

Snow. Accumulation Ranging from up to 2 Inches in the Valleys to 2 to 4 Inches on the tug hill. Highs in the mid to upper 30s. South Winds 10 to 20 Mph with Gusts up to 30 Mph. Chance of snow 100 percent.

Tonight 18 Jan Jefferson

Mostly cloudy and windy. Lows Ranging from the upper 20s across the tug hill to the lower 30s along the lake Ontario shore. South Winds 20 to 30 Mph.

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Wellesley Island Temperature Statistics

January Temperature

Watertown, Watertown International Airport (22.4 miles)

  • Lowest 6 January, 2025

    7.8 °F

  • Average January

    23.7 °F

  • Highest 1 January, 2025

    41.6 °F

Climate (2020–Present)

Watertown, Watertown International Airport (22.4 miles)

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  • Average Low 2020–2025

    39.1 °F

  • Average 2020–2025

    48.7 °F

  • Average High 2020–2025

    57.5 °F
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