S
M
T
W
T
F
S
29
43°
27°
30
32°
26°
1
34°
28°
2
36°
25°
3
36°
29°
4
41°
28°
5
36°
27°
6
36°
21°
7
28°
20°
8
32°
24°
9
32°
20°
10
28°
19°
11
32°
26°
12
37°
27°
13
38°
26°
14
36°
25°
15
35°
24°
16
37°
25°
17
39°
24°
18
25°
5°
19
22°
6°
20
24°
12°
21
28°
19°
22
34°
13°
23
33°
18°
24
28°
11°
25
34°
2°
26
22°
17°
27
27°
21°
28
37°
20°
29
36°
10°
30
33°
5°
31
23°
9°
1
21°
2°
2
27°
-1°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Concord
Concord's December 2026 forecast shows daily high temperatures ranging from 21° to 43°, with overnight lows between -1° and 29°. The average high for December is 32° with an average low of 18°. 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 Concord. See also: January | February | March.