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°
40°
23
66°
36°
24
67°
40°
25
71°
51°
26
64°
53°
27
65°
52°
28
66°
50°
29
71°
49°
30
70°
51°
1
73°
49°
2
70°
48°
3
63°
47°
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 63° to 73°, with overnight lows between 36° and 53°. The average high for September is 68° with an average low of 47°. 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.