Cape Vincent Weather Forecast

    • 61
    • 74

    Increasing Clouds

    • 65
    • 74

    Mostly Cloudy

    • 63
    • 75

    Rain Showers

    • 55
    • 71

    Partly Sunny

    • 57
    • 67

    Mostly Sunny

    • 61
    • 72

    Partly Sunny

Today 7 Sep Jefferson

Sunny. Highs Ranging from around 70 on the tug hill to the mid 70s across the lower Elevations. Light Winds, becoming west 5 to 10 Mph.

Tonight 7 Sep Jefferson

Partly to mostly cloudy. Lows Ranging from the mid 50s across the tug hill to the upper 50s along the lake Ontario shore. West Winds 5 to 10 Mph, becoming light.

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Cape Vincent Temperature Statistics

September Temperature

Watertown, Watertown International Airport (18 miles)

  • Lowest 4 September, 2026

    57 °F

  • Average September

    70.7 °F

  • Highest 2 September, 2026

    83.6 °F

Climate (2021–2026)

Watertown, Watertown International Airport (18 miles)

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    57.6 °F
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