Cape Vincent Weather Forecast

    • 58
    • 76

    Decreasing Clouds

    • 55
    • 73

    Partly Sunny

    • 56
    • 72

    Mostly Sunny

    • 59
    • 72

    Partly Sunny

    • 60
    • 71

    Chance Rain Showers

    • 62
    • 73

    Rain Showers Likely

Today 4 Sep Jefferson

Some patchy fog in the Morning, otherwise partly to mostly sunny. Highs Ranging from the lower 70s on the tug hill to the mid 70s across the lower Elevations. Light northwest Winds.

Tonight 4 Sep Jefferson

Partly cloudy with some patchy fog developing overnight. Lows Ranging from the lower 50s across the tug hill to the mid 50s along the lake Ontario shore. Light Winds.

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Cape Vincent Temperature Statistics

September Temperature

Watertown, Watertown International Airport (18 miles)

  • Lowest 1 September, 2026

    64 °F

  • Average September

    70 °F

  • Highest 1 September, 2026

    78.1 °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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