S
M
T
W
T
F
S
29
51°
36°
30
56°
31°
1
52°
30°
2
43°
33°
3
47°
34°
4
50°
35°
5
51°
39°
6
54°
41°
7
54°
43°
8
57°
39°
9
57°
38°
10
54°
38°
11
52°
31°
12
49°
31°
13
42°
30°
14
44°
29°
15
43°
27°
16
41°
24°
17
39°
25°
18
38°
25°
19
39°
24°
20
39°
28°
21
42°
35°
22
48°
36°
23
53°
33°
24
51°
29°
25
45°
20°
26
41°
19°
27
38°
30°
28
38°
24°
29
46°
20°
30
38°
19°
31
34°
23°
1
35°
30°
2
42°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Barnegat
Barnegat's December 2026 forecast shows daily high temperatures ranging from 34° to 57°, with overnight lows between 19° and 43°. The average high for December is 46° with an average low of 30°. 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 Barnegat. See also: January | February | March.