S
M
T
W
T
F
S
26
86°
62°
27
90°
68°
28
85°
68°
29
81°
69°
30
77°
66°
31
88°
65°
1
90°
73°
2
83°
74°
3
82°
71°
4
83°
70°
5
82°
71°
6
88°
72°
7
87°
73°
8
88°
70°
9
87°
73°
10
89°
68°
11
85°
69°
12
84°
66°
13
83°
65°
14
81°
67°
15
82°
64°
16
80°
63°
17
87°
66°
18
85°
64°
19
84°
70°
20
86°
67°
21
84°
63°
22
82°
68°
23
87°
70°
24
88°
71°
25
88°
70°
26
86°
69°
27
78°
69°
28
80°
70°
29
84°
69°
30
85°
68°
31
85°
68°
1
84°
64°
2
78°
61°
3
77°
61°
4
77°
60°
5
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Hackensack
Hackensack's August 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 60° and 74°. The average high for August is 84° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Hackensack. See also: September | October | November.