Port Vivian Weather Forecast

    • 61
    • 82

    Increasing Clouds

    • 65
    • 84

    Mostly Cloudy

    • 59
    • 77

    Rain Showers

    • 58
    • 78

    Slight Chance Rain Showers

    • 62
    • 81

    Mostly Sunny

    • 65
    • 84

    Partly Sunny

Today 31 Jul Jefferson

Sunny. Patchy fog this morning. Highs Ranging from the mid 70s on the tug hill to the lower 80s across the lower Elevations. Light west Winds.

Tonight 31 Jul Jefferson

Mainly clear in the Evening, then becoming partly cloudy. Lows Ranging from the upper 50s across the tug hill to the mid 60s along the lake Ontario shore. Light south Winds.

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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 17 July, 2026

    50.9 °F

  • Average July

    72 °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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