Cape Vincent Weather Forecast

    • 55
    • 70

    Increasing Clouds

    • 54
    • 71

    Partly Sunny

    • 50
    • 69

    Partly Sunny

    • 48
    • 63

    Chance Rain Showers

    • 49
    • 64

    Slight Chance Rain Showers

    • 52
    • 66

    Partly Sunny

Today 26 May Jefferson

Sunny, warmer with Highs Ranging from the lower 70s along the lake Ontario shore to the upper 70s inland. Southwest Winds 10 Mph or Less, increasing to 10 to 15 Mph.

Tonight 26 May Jefferson

Partly cloudy. Lows in the lower 50s. Light south Winds.

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Cape Vincent Temperature Statistics

May Temperature

Watertown, Watertown International Airport (18 miles)

  • Lowest 1 May, 2026

    29.6 °F

  • Average May

    52 °F

  • Highest 18 May, 2026

    88.6 °F

Climate (2021–Present)

Watertown, Watertown International Airport (18 miles)

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  • Average Low 2021–2026

    38.4 °F

  • Average 2021–2026

    48.3 °F

  • Average High 2021–2026

    57.5 °F
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