Port Vivian Weather Forecast

    • 46
    • 68

    Rain Showers Likely

    • 46
    • 65

    Mostly Sunny

    • 47
    • 71

    Slight Chance Thunderstorms

    • 48
    • 70

    Slight Chance Thunderstorms

    • 48
    • 72

    Slight Chance Rain Showers

    • 51
    • 72

    Partly Sunny

Today 29 May Jefferson

Partly sunny late this Morning, then mostly cloudy with a chance of Showers early this afternoon. Mostly cloudy with Showers likely late. Highs Ranging from the lower 60s on the tug hill to the mid 60s across the lower Elevations. Southwest Winds 10 to 20 Mph with Gusts up to 30 Mph, becoming west. Chance of rain 60 percent.

Tonight 29 May Jefferson

Showers likely in the Evening, then a chance of Showers overnight. Breezy with Lows Ranging from the lower 40s across the tug hill to the upper 40s along the lake Ontario shore. Northwest Winds 10 to 20 Mph with Gusts up to 30 Mph, becoming north. Chance of rain 70 percent.

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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 11 May, 2026

    34.3 °F

  • Average May

    54.5 °F

  • Highest 18 May, 2026

    88.9 °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

    55.9 °F
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