S
M
T
W
T
F
S
30
73°
58°
31
68°
59°
1
72°
57°
2
76°
59°
3
74°
59°
4
75°
56°
5
76°
55°
6
76°
56°
7
83°
57°
8
80°
61°
9
83°
64°
10
90°
62°
11
85°
59°
12
81°
58°
13
80°
59°
14
79°
56°
15
79°
58°
16
75°
57°
17
80°
58°
18
80°
56°
19
74°
54°
20
76°
59°
21
77°
56°
22
80°
56°
23
74°
57°
24
72°
52°
25
73°
52°
26
72°
53°
27
71°
52°
28
71°
52°
29
72°
53°
30
72°
56°
1
71°
52°
2
72°
54°
3
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Newark
Newark's September 2026 forecast shows daily high temperatures ranging from 71° to 90°, with overnight lows between 52° and 64°. The average high for September is 77° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Newark. See also: October | November | December.
