Port Vivian Weather Forecast

    • 49
    • 70

    Mostly Sunny

    • 65
    • 79

    Chance Rain Showers

    • 52
    • 78

    Chance Rain Showers

    • 47
    • 67

    Mostly Sunny

    • 60
    • 70

    Chance Rain Showers

    • 58
    • 73

    Chance Rain Showers

    • 53
    • 71

    Chance Rain Showers

Today 11 Sep Jefferson

Sunny. Near steady Temperatures Ranging from the mid 60s on the tug hill to the upper 60s across the lower Elevations. Light west Winds.

Tonight 11 Sep Jefferson

Mainly clear with some patchy fog developing after midnight. 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

September Temperature

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

  • Lowest 7 September, 2026

    54 °F

  • Average September

    67.5 °F

  • Highest 2 September, 2026

    82.2 °F

Climate (2021–2026)

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

    55.9 °F
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