S
M
T
W
T
F
S
30
81°
63°
31
80°
70°
1
85°
68°
2
77°
71°
3
85°
71°
4
86°
66°
5
82°
63°
6
76°
62°
7
81°
65°
8
78°
61°
9
81°
65°
10
82°
64°
11
79°
64°
12
80°
63°
13
79°
61°
14
78°
60°
15
74°
60°
16
74°
64°
17
76°
57°
18
72°
56°
19
72°
55°
20
73°
58°
21
76°
63°
22
80°
64°
23
80°
63°
24
78°
60°
25
77°
58°
26
77°
60°
27
78°
61°
28
78°
61°
29
77°
57°
30
71°
53°
1
67°
51°
2
70°
56°
3
75°
59°
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 67° to 86°, with overnight lows between 51° and 71°. The average high for September is 77° with an average low of 61°. 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.
