New Jersey September Weather

New Jersey weather averages and all-time records in the month of September from 1991–2020 based on data made available by the NOAA.

State:

Month:

Statewide September Averages
High temperature	77.2 °F
Low temperature	56.6 °F
Precipitation	4.2 inches

New Jersey Cities

September weather averages for various places in New Jersey, from 1991–2020.

City	Average (°F)		Record (°F)		Monthly (inches)
City	High	Low	High	Low	Precipitation
Atlantic City	78.1	58.0	99	32	3.6
Boonton	76.7	54.3	104	29	3.9
Cape May	78.6	61.7	96	32	3.8
Flemington	77.4	54.0	105	27	4.4
Hightstown	78.3	54.8	103	31	4.1
Millville	78.4	57.5	103	32	3.1
New Brunswick	78.4	56.5	102	31	4.1
Newark	78.0	61.0	105	34	3.8
Trenton	77.4	57.4	101	34	4.1