Cape Vincent Weather Forecast

    • 56
    • 76

    Chance Rain Showers

    • 53
    • 68

    Mostly Sunny

    • 61
    • 71

    Chance Rain Showers

    • 61
    • 72

    Rain Showers Likely

    • 58
    • 72

    Rain Showers Likely

    • 54
    • 68

    Partly Sunny

Today 13 Sep Jefferson

Cloudy in the Morning, then becoming partly sunny. A 50 percent chance of Showers. Humid with Highs Ranging from the lower 70s on the tug hill to the mid 70s across the lower Elevations. South Winds 5 to 10 Mph, becoming southwest.

Tonight 13 Sep Jefferson

Partly to mostly cloudy. A 50 percent chance of Showers. Breezy and less humid with Lows Ranging from the upper 40s on the tug hill to the lower 50s across the lower Elevations. West Winds 5 to 10 Mph, becoming northwest.

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Cape Vincent Temperature Statistics

September Temperature

Watertown, Watertown International Airport (18 miles)

  • Lowest 7 September, 2026

    47.6 °F

  • Average September

    67.3 °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

    38.2 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    57.6 °F
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