Cape Vincent Weather Forecast
- 44
- 64
Mostly Cloudy
- 45
- 59
Mostly Sunny
- 49
- 65
Chance Rain Showers
- 48
- 61
Rain Showers Likely
- 49
- 62
Chance Rain Showers
- 50
- 63
Mostly Cloudy
Today 20 May Jefferson
Mostly cloudy with Showers likely in the Morning, then mostly sunny in the afternoon. Breezy, cooler with Highs Ranging from the upper 50s on the tug hill to the mid 60s across the lower Elevations. Southwest Winds 5 to 10 Mph, increasing to 10 to 15 Mph. Chance of rain 70 percent.
Tonight 20 May Jefferson
Partly to mostly cloudy. Much cooler with Lows Ranging from around 40 across the tug hill to the mid 40s along the lake Ontario shore. West Winds 5 to 10 Mph, becoming north.
Cape Vincent Temperature Statistics
May Temperature
Watertown, Watertown International Airport (18 miles)
Lowest 1 May, 2026
29.6 °FAverage May
49.6 °FHighest 16 May, 2026
76.6 °F
Climate (2021–Present)
Watertown, Watertown International Airport (18 miles)
Average Low 2021–2026
38.4 °FAverage 2021–2026
48.3 °FAverage High 2021–2026
57.6 °F