S
M
T
W
T
F
S
30
81°
55°
31
85°
59°
1
85°
60°
2
83°
59°
3
85°
52°
4
79°
50°
5
77°
52°
6
81°
58°
7
84°
58°
8
83°
57°
9
77°
56°
10
79°
57°
11
83°
56°
12
84°
57°
13
82°
57°
14
83°
56°
15
83°
56°
16
82°
55°
17
81°
51°
18
79°
47°
19
74°
45°
20
74°
45°
21
72°
44°
22
72°
46°
23
73°
46°
24
76°
45°
25
73°
51°
26
77°
52°
27
75°
51°
28
77°
51°
29
76°
50°
30
77°
49°
1
74°
48°
2
75°
50°
3
70°
44°
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 85°, with overnight lows between 44° and 60°. The average high for September is 79° 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.