S
M
T
W
T
F
S
29
45°
29°
30
44°
30°
1
53°
26°
2
47°
29°
3
46°
24°
4
57°
21°
5
54°
21°
6
39°
22°
7
42°
23°
8
43°
20°
9
41°
18°
10
40°
19°
11
36°
20°
12
37°
21°
13
38°
20°
14
39°
21°
15
38°
24°
16
39°
24°
17
39°
22°
18
40°
31°
19
43°
29°
20
45°
25°
21
41°
22°
22
38°
20°
23
38°
18°
24
37°
23°
25
37°
21°
26
38°
23°
27
36°
23°
28
37°
22°
29
35°
18°
30
37°
17°
31
40°
13°
1
Hist. Avg.
42°
25°
2
Hist. Avg.
41°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Bound Brook
Bound Brook's December 2026 forecast shows daily high temperatures ranging from 35° to 57°, with overnight lows between 13° and 31°. The average high for December is 41° with an average low of 22°. 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 Bound Brook. See also: January | February | March.
