S
M
T
W
T
F
S
29
52°
42°
30
62°
42°
1
61°
43°
2
63°
41°
3
51°
37°
4
57°
34°
5
59°
41°
6
60°
37°
7
49°
36°
8
48°
33°
9
49°
33°
10
48°
28°
11
46°
26°
12
47°
27°
13
49°
26°
14
50°
27°
15
49°
32°
16
48°
37°
17
52°
39°
18
58°
33°
19
56°
25°
20
49°
23°
21
46°
24°
22
46°
26°
23
48°
28°
24
46°
25°
25
45°
24°
26
45°
24°
27
46°
25°
28
46°
25°
29
48°
29°
30
51°
30°
31
56°
25°
1
48°
21°
2
45°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Rockmart
Rockmart's December 2026 forecast shows daily high temperatures ranging from 45° to 63°, with overnight lows between 20° and 43°. The average high for December is 51° 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 Rockmart. See also: January | February | March.