S
M
T
W
T
F
S
30
68°
54°
31
69°
49°
1
68°
49°
2
67°
53°
3
67°
48°
4
71°
47°
5
67°
49°
6
68°
48°
7
69°
51°
8
70°
53°
9
71°
52°
10
67°
52°
11
69°
53°
12
68°
51°
13
70°
52°
14
70°
53°
15
69°
50°
16
69°
48°
17
66°
51°
18
66°
51°
19
68°
45°
20
63°
45°
21
64°
44°
22
63°
45°
23
62°
46°
24
64°
50°
25
62°
51°
26
66°
50°
27
67°
50°
28
66°
48°
29
61°
47°
30
61°
44°
1
60°
43°
2
60°
42°
3
61°
43°
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 60° to 71°, with overnight lows between 42° and 54°. The average high for September is 66° with an average low of 49°. 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.
