Port Vivian Weather Forecast

    • 55
    • 75

    Mostly Sunny

    • 63
    • 77

    Partly Sunny

    • 62
    • 81

    Rain Showers

    • 56
    • 73

    Chance Rain Showers

    • 57
    • 75

    Mostly Sunny

    • 59
    • 78

    Partly Sunny

Today 19 Jul Jefferson

Mostly sunny. Patchy smoke in the morning. Highs Ranging from the upper 60s on the tug hill to the mid 70s across the lower Elevations. Northwest Winds 5 to 10 Mph.

Tonight 19 Jul Jefferson

Partly cloudy. Patchy smoke. Lows Ranging from the mid 50s across the tug hill to the upper 50s along the lake Ontario shore. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Port Vivian Temperature Statistics

July Temperature

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

  • Lowest 12 July, 2026

    59 °F

  • Average July

    74.8 °F

  • Highest 1 July, 2026

    90 °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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