S
M
T
W
T
F
S
30
78°
60°
31
77°
60°
1
77°
59°
2
76°
59°
3
72°
56°
4
72°
56°
5
73°
53°
6
74°
53°
7
74°
54°
8
76°
57°
9
77°
58°
10
76°
58°
11
76°
48°
12
70°
56°
13
73°
49°
14
69°
48°
15
70°
52°
16
74°
53°
17
75°
55°
18
76°
55°
19
75°
48°
20
68°
46°
21
67°
47°
22
67°
46°
23
68°
51°
24
69°
52°
25
69°
53°
26
65°
52°
27
71°
52°
28
64°
49°
29
69°
45°
30
71°
47°
1
71°
50°
2
70°
46°
3
70°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Concord
Concord's September 2026 forecast shows daily high temperatures ranging from 64° to 78°, with overnight lows between 40° and 60°. The average high for September is 72° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Concord. See also: October | November | December.