S
M
T
W
T
F
S
30
80°
59°
31
80°
68°
1
84°
66°
2
69°
64°
3
87°
67°
4
85°
71°
5
79°
66°
6
77°
60°
7
79°
55°
8
80°
56°
9
84°
60°
10
86°
69°
11
80°
60°
12
80°
55°
13
81°
65°
14
74°
56°
15
73°
58°
16
81°
66°
17
84°
70°
18
83°
61°
19
76°
64°
20
81°
64°
21
75°
59°
22
70°
56°
23
71°
57°
24
70°
56°
25
74°
57°
26
73°
58°
27
72°
60°
28
76°
58°
29
76°
57°
30
70°
52°
1
69°
54°
2
70°
58°
3
74°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Montclair Township
Montclair Township's September 2026 forecast shows daily high temperatures ranging from 69° to 84°, with overnight lows between 52° and 70°. The average high for September is 75° with an average low of 59°. 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 Montclair Township. See also: October | November | December.
