Gravely Bay Weather Forecast
- 52
- 59
Mostly Cloudy
- 53
- 62
Partly Sunny
- 53
- 67
Mostly Sunny
- 53
- 66
Partly Sunny
- 56
- 66
Partly Sunny
- 56
- 64
Partly Sunny
Today 21 Sep Jefferson
Mostly sunny. Highs around 70.
Tonight 21 Sep Jefferson
Mostly cloudy. Lows Ranging from the lower 40s across the tug hill to the mid 40s along the lake Ontario shore. Northeast Winds 5 to 10 Mph.
Gravely Bay Temperature Statistics
September Temperature
Watertown, Watertown International Airport (16.8 miles)
Lowest 19 September, 2026
37.9 °FAverage September
63.6 °FHighest 2 September, 2026
83.6 °F
Climate (2021–2026)
Watertown, Watertown International Airport (16.8 miles)
Average Low 2021–2026
38.2 °FAverage 2021–2026
48.2 °FAverage High 2021–2026
57.6 °F