Port Vivian Weather Forecast
- 60
- 83
Increasing Clouds
- 62
- 84
Mostly Cloudy
- 62
- 82
Chance Rain Showers
- 64
- 81
Chance Rain Showers
- 65
- 83
Partly Sunny
- 65
- 84
Chance Rain Showers
Today 4 Jul Jefferson
Mostly sunny. Humid with Highs Ranging from the upper 70s on the tug hill to the lower 80s across the lower Elevations. Light northwest Winds.
Tonight 4 Jul Jefferson
Partly to mostly cloudy. Lows Ranging from around 60 across the tug hill to the mid 60s along the lake Ontario shore. Light Winds.
Port Vivian Temperature Statistics
July Temperature
Fort Drum / Wheeler-Sack U. S. Army Airfield (21.1 miles)
Lowest 1 July, 2026
69.4 °FAverage July
80.2 °FHighest 1 July, 2026
90 °F
Climate (2021–2026)
Fort Drum / Wheeler-Sack U. S. Army Airfield (21.1 miles)
Average Low 2021–2026
39.3 °FAverage 2021–2026
47.7 °FAverage High 2021–2026
55.9 °F