S
M
T
W
T
F
S
30
85°
58°
31
70°
58°
1
73°
62°
2
75°
60°
3
76°
60°
4
76°
57°
5
82°
56°
6
80°
58°
7
88°
54°
8
95°
58°
9
101°
65°
10
101°
71°
11
88°
61°
12
83°
62°
13
79°
58°
14
87°
57°
15
86°
57°
16
71°
60°
17
73°
61°
18
84°
55°
19
86°
58°
20
73°
57°
21
73°
57°
22
78°
54°
23
87°
56°
24
89°
60°
25
82°
56°
26
81°
54°
27
76°
56°
28
83°
55°
29
90°
57°
30
89°
56°
1
85°
55°
2
80°
52°
3
85°
56°
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 76° to 90°, with overnight lows between 52° and 60°. The average high for September is 84° with an average low of 56°. 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.