September weather in Watertown, NY
The average temperature in Watertown in September is 62.1°F (52.3°F–71.8°F). Average precipitation: 3.85 inches.
September is a fall month in Watertown, and is warmer than the annual average of 46.4°F. Daily temperatures swing about 19.5°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 12h 17m. For travel, September is one of the best months of the year to visit.
Avg High
71.8°F
Avg Low
52.3°F
Precipitation
3.85 in
Daylight
12h 17m