Weather For September 2024 Nj Calendar. Get the monthly weather forecast for newark, nj, including daily high/low, historical averages, to help you plan ahead. The weather in new jersey in september is relatively dry (with 2.8in of rainfall over 4 days).

The temperatures in new jersey in september are comfortable with low of 18 ° c and and high up to 24 ° c. The weather in new jersey in september is relatively dry (with 2.8in of rainfall over 4 days).