September weather in New Brunswick, NJ
The average temperature in New Brunswick in September is 67.4°F (56.5°F–78.4°F). Average precipitation: 4.18 inches.
September is a fall month in New Brunswick, and is warmer than the annual average of 53.8°F. Daily temperatures swing about 21.9°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
78.4°F
Avg Low
56.5°F
Precipitation
4.18 in
Daylight
12h 15m