Port Vivian Weather Forecast

    • 47
    • 77

    Patchy Fog

    • 55
    • 79

    Partly Sunny

    • 55
    • 78

    Partly Sunny

    • 59
    • 79

    Chance Rain Showers

    • 53
    • 76

    Rain Showers Likely

    • 50
    • 67

    Chance Rain Showers

Today 31 Aug Jefferson

Sunny. Highs Ranging from around 70 on the tug hill to the mid 70s across the lower Elevations. Light northwest Winds.

Tonight 31 Aug Jefferson

Mainly clear with some patchy fog developing. Lows Ranging from the upper 40s across the tug hill to the lower 50s along the lake Ontario shore. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Port Vivian Temperature Statistics

August Temperature

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

  • Lowest 1 August, 2025

    48.7 °F

  • Average August

    71.1 °F

  • Highest 12 August, 2025

    93.7 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    39.7 °F

  • Average 2020–2025

    48.1 °F

  • Average High 2020–2025

    56.2 °F
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