S
M
T
W
T
F
S
29
50°
38°
30
54°
40°
1
55°
39°
2
54°
39°
3
56°
38°
4
50°
36°
5
53°
33°
6
51°
37°
7
54°
36°
8
45°
32°
9
44°
30°
10
41°
28°
11
40°
34°
12
42°
32°
13
44°
31°
14
41°
26°
15
41°
28°
16
42°
30°
17
44°
31°
18
43°
33°
19
50°
31°
20
49°
21°
21
42°
23°
22
38°
24°
23
36°
28°
24
40°
27°
25
49°
26°
26
49°
20°
27
39°
20°
28
34°
22°
29
37°
22°
30
38°
31°
31
45°
27°
1
52°
21°
2
47°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Helmetta
Helmetta's December 2026 forecast shows daily high temperatures ranging from 34° to 56°, with overnight lows between 18° and 40°. The average high for December is 45° with an average low of 29°. 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 Helmetta. See also: January | February | March.