S
M
T
W
T
F
S
29
32°
17°
30
34°
22°
1
33°
22°
2
34°
21°
3
32°
22°
4
32°
20°
5
34°
22°
6
32°
15°
7
34°
10°
8
26°
14°
9
21°
17°
10
28°
12°
11
28°
16°
12
23°
18°
13
27°
20°
14
31°
12°
15
32°
8°
16
28°
14°
17
22°
6°
18
24°
14°
19
23°
16°
20
29°
17°
21
30°
16°
22
29°
11°
23
28°
6°
24
21°
12°
25
23°
14°
26
26°
14°
27
31°
11°
28
26°
6°
29
22°
11°
30
21°
-2°
31
26°
-6°
1
30°
-6°
2
9°
-3°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Hackensack
Hackensack's December 2026 forecast shows daily high temperatures ranging from 9° to 34°, with overnight lows between -6° and 22°. The average high for December is 27° with an average low of 13°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Hackensack. See also: January | February | March.
