S
M
T
W
T
F
S
30
73°
64°
31
69°
62°
1
83°
67°
2
84°
67°
3
83°
67°
4
78°
64°
5
74°
60°
6
71°
51°
7
74°
53°
8
78°
62°
9
81°
66°
10
76°
55°
11
72°
51°
12
80°
64°
13
78°
60°
14
71°
60°
15
77°
60°
16
72°
56°
17
71°
53°
18
63°
51°
19
62°
49°
20
65°
51°
21
64°
50°
22
65°
55°
23
67°
55°
24
69°
54°
25
73°
55°
26
73°
52°
27
66°
49°
28
72°
54°
29
73°
55°
30
73°
55°
1
72°
54°
2
72°
52°
3
70°
50°
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 62° to 81°, with overnight lows between 49° and 66°. The average high for September is 71° with an average low of 55°. 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.
