Port Vivian Weather Forecast

    • 42
    • 56

    Rain Showers Likely

    • 44
    • 60

    Rain Showers

    • 44
    • 59

    Chance Rain Showers

    • 46
    • 63

    Mostly Cloudy

    • 50
    • 67

    Partly Sunny

    • 47
    • 69

    Partly Sunny

Today 12 May Jefferson

Sunny, cool with Highs Ranging from the lower 50s on the tug hill to the mid 50s across the lower Elevations. West Winds 10 Mph or less.

Tonight 12 May Jefferson

Becoming mainly clear with a widespread frost or freeze. Cold with Lows Ranging from the lower 30s across the tug hill to the upper 30s along the lake Ontario shore. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Port Vivian Temperature Statistics

May Temperature

Fort Drum / Wheeler-Sack U. S. Army Airfield (21.1 miles)

  • Lowest 1 May, 2026

    34.7 °F

  • Average May

    48.5 °F

  • Highest 5 May, 2026

    70.3 °F

Climate (2021–Present)

Fort Drum / Wheeler-Sack U. S. Army Airfield (21.1 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    56 °F
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