S
M
T
W
T
F
S
29
56°
44°
30
58°
41°
1
57°
33°
2
54°
30°
3
45°
32°
4
46°
38°
5
52°
33°
6
48°
31°
7
44°
39°
8
51°
35°
9
52°
31°
10
44°
26°
11
41°
23°
12
38°
25°
13
37°
26°
14
39°
22°
15
38°
23°
16
35°
23°
17
37°
24°
18
42°
22°
19
39°
23°
20
36°
33°
21
41°
34°
22
42°
32°
23
42°
32°
24
40°
35°
25
50°
33°
26
50°
31°
27
36°
30°
28
36°
28°
29
37°
34°
30
Hist. Avg.
41°
28°
31
Hist. Avg.
41°
28°
1
Hist. Avg.
41°
28°
2
Hist. Avg.
41°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Newark
Newark's December 2026 forecast shows daily high temperatures ranging from 35° to 58°, with overnight lows between 22° and 44°. The average high for December is 44° with an average low of 31°. 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 Newark. See also: January | February | March.