North Bay Weather Forecast
- 56
- 73
Mostly Cloudy
- 47
- 69
Partly Sunny
- 49
- 63
Rain Showers Likely
- 47
- 65
Partly Sunny
- 45
- 58
Partly Sunny
- 45
- 58
Partly Sunny
- 49
- 61
Chance Rain Showers
Today 17 Sep Jefferson
Partly sunny with a 30 percent chance of Showers. Highs in the mid 60s.
Tonight 17 Sep Jefferson
Mostly cloudy with a chance of Showers Early, then mostly cloudy from late evening on. Lows Ranging from the mid 50s across the tug hill to the upper 50s along the lake Ontario shore. Light northwest Winds. Chance of rain 30 percent.
North Bay Temperature Statistics
September Temperature
Watertown, Watertown International Airport (18.6 miles)
Lowest 12 September, 2026
42.7 °FAverage September
65 °FHighest 2 September, 2026
83.6 °F
Climate (2021–2026)
Watertown, Watertown International Airport (18.6 miles)
Average Low 2021–2026
38.2 °FAverage 2021–2026
48.2 °FAverage High 2021–2026
57.6 °F