S
M
T
W
T
F
S
30
101°
80°
31
100°
80°
1
100°
80°
2
100°
80°
3
95°
77°
4
99°
79°
5
N/A
6
101°
77°
7
101°
78°
8
101°
80°
9
101°
79°
10
100°
75°
11
101°
76°
12
101°
77°
13
100°
74°
14
97°
74°
15
96°
75°
16
95°
71°
17
96°
72°
18
96°
70°
19
86°
64°
20
90°
69°
21
92°
70°
22
92°
70°
23
91°
69°
24
89°
68°
25
82°
68°
26
86°
67°
27
86°
67°
28
88°
66°
29
86°
67°
30
85°
59°
1
77°
55°
2
76°
56°
3
76°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Newark
Newark's September 2026 forecast shows daily high temperatures ranging from 76° to 101°, with overnight lows between 55° and 80°. The average high for September is 92° with an average low of 70°. 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.
