S
M
T
W
T
F
S
30
84°
60°
31
89°
68°
1
87°
68°
2
91°
69°
3
91°
70°
4
82°
68°
5
83°
69°
6
78°
60°
7
82°
57°
8
85°
65°
9
88°
68°
10
76°
57°
11
77°
55°
12
82°
60°
13
84°
62°
14
80°
60°
15
74°
58°
16
75°
55°
17
76°
56°
18
76°
57°
19
73°
54°
20
72°
50°
21
79°
55°
22
72°
55°
23
73°
54°
24
77°
54°
25
78°
55°
26
78°
54°
27
77°
54°
28
77°
55°
29
78°
55°
30
78°
54°
1
77°
54°
2
74°
47°
3
64°
42°
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 64° to 88°, with overnight lows between 42° and 68°. 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.
