S
M
T
W
T
F
S
30
83°
62°
31
82°
62°
1
83°
61°
2
79°
61°
3
81°
60°
4
81°
60°
5
82°
59°
6
82°
61°
7
83°
61°
8
84°
60°
9
79°
60°
10
78°
59°
11
81°
60°
12
82°
60°
13
82°
58°
14
71°
47°
15
70°
53°
16
72°
54°
17
71°
51°
18
70°
50°
19
74°
49°
20
77°
54°
21
78°
54°
22
78°
53°
23
76°
44°
24
71°
44°
25
70°
52°
26
73°
53°
27
74°
43°
28
73°
42°
29
66°
46°
30
68°
50°
1
68°
50°
2
71°
51°
3
74°
51°
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 66° to 84°, with overnight lows between 42° and 62°. The average high for September is 76° with an average low of 54°. 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.
