S
M
T
W
T
F
S
30
76°
64°
31
83°
57°
1
80°
51°
2
80°
52°
3
84°
62°
4
74°
60°
5
77°
62°
6
80°
63°
7
80°
64°
8
83°
58°
9
71°
49°
10
79°
43°
11
80°
60°
12
64°
47°
13
64°
40°
14
59°
36°
15
66°
42°
16
70°
40°
17
67°
46°
18
63°
53°
19
63°
52°
20
65°
44°
21
61°
39°
22
62°
37°
23
64°
38°
24
59°
55°
25
N/A
26
59°
56°
27
72°
45°
28
68°
40°
29
64°
61°
30
77°
52°
1
61°
40°
2
61°
34°
3
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Hackensack
Hackensack's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Hackensack. See also: October | November | December.