S
M
T
W
T
F
S
30
92°
67°
31
91°
64°
1
90°
63°
2
85°
64°
3
88°
67°
4
89°
64°
5
88°
64°
6
89°
67°
7
90°
66°
8
89°
65°
9
89°
65°
10
83°
66°
11
88°
65°
12
87°
60°
13
82°
61°
14
82°
63°
15
83°
63°
16
85°
60°
17
84°
59°
18
84°
57°
19
81°
59°
20
81°
61°
21
79°
56°
22
80°
56°
23
84°
57°
24
83°
60°
25
84°
61°
26
83°
59°
27
83°
55°
28
78°
54°
29
82°
53°
30
82°
54°
1
79°
52°
2
Hist. Avg.
79°
54°
3
Hist. Avg.
79°
54°
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 78° to 92°, with overnight lows between 52° and 67°. The average high for September is 85° with an average low of 61°. 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.