Wellsley Island Park Weather Forecast
- 12
- 23
Snow Showers
- 23
- 31
Chance Snow Showers
- 19
- 38
Chance Rain Showers
- 27
- 43
Rain/Snow
- 9
- 36
Chance Snow Showers
- 23
- 33
Chance Rain/Snow
- 13
- 33
Chance Snow Showers
Today 15 Dec Jefferson
Snow likely Early, then lake effect snow late. Snow may be heavy at Times late. Accumulation 2 to 4 Inches in the most persistent Snows. Windy with Highs Ranging from the lower 20s inland to the upper 20s along the lake Ontario shore. Light Winds, becoming southwest 20 to 30 Mph. Chance of snow near 100 percent.
Tonight 15 Dec Jefferson
Lake effect snow. Snow may be heavy at Times. Additional accumulation 7 to 13 Inches in the most persistent Snows between Watertown and the Oswego county border. Windy with Lows 10 to 15. West Winds 20 to 30 Mph, becoming light. Chance of snow near 100 percent.
Wellsley Island Park Temperature Statistics
December Temperature
Fort Drum / Wheeler-Sack U. S. Army Airfield (23.6 miles)
Lowest 5 December, 2025
-2.6 °FAverage December
20.3 °FHighest 10 December, 2025
35.8 °F
Climate (2020–Present)
Fort Drum / Wheeler-Sack U. S. Army Airfield (23.6 miles)
Average Low 2020–2025
39.5 °FAverage 2020–2025
48 °FAverage High 2020–2025
56.1 °F