S
M
T
W
T
F
S
29
42°
30°
30
53°
25°
1
52°
23°
2
50°
32°
3
51°
23°
4
52°
22°
5
40°
21°
6
37°
22°
7
37°
22°
8
38°
26°
9
40°
31°
10
47°
31°
11
49°
26°
12
46°
25°
13
39°
25°
14
39°
21°
15
40°
17°
16
36°
16°
17
34°
17°
18
33°
26°
19
42°
26°
20
40°
20°
21
46°
21°
22
35°
30°
23
46°
31°
24
47°
27°
25
46°
26°
26
45°
26°
27
41°
27°
28
43°
28°
29
44°
28°
30
44°
30°
31
47°
28°
1
47°
25°
2
46°
24°
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 33° to 53°, with overnight lows between 16° and 32°. The average high for December is 43° with an average low of 25°. 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.