S
M
T
W
T
F
S
30
81°
51°
31
83°
52°
1
70°
58°
2
73°
62°
3
77°
61°
4
84°
63°
5
77°
56°
6
74°
49°
7
82°
44°
8
79°
51°
9
72°
49°
10
86°
60°
11
76°
47°
12
78°
41°
13
68°
59°
14
70°
47°
15
72°
39°
16
81°
50°
17
79°
58°
18
78°
56°
19
65°
42°
20
59°
40°
21
69°
47°
22
67°
43°
23
67°
36°
24
70°
39°
25
74°
36°
26
65°
55°
27
61°
56°
28
56°
54°
29
70°
55°
30
70°
55°
1
75°
54°
2
80°
49°
3
70°
39°
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 70° to 80°, with overnight lows between 39° and 49°. The average high for September is 75° with an average low of 44°. 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.