S
M
T
W
T
F
S
30
88°
61°
31
84°
61°
1
88°
57°
2
80°
58°
3
81°
65°
4
89°
66°
5
89°
65°
6
90°
61°
7
88°
62°
8
80°
60°
9
86°
56°
10
79°
55°
11
79°
58°
12
81°
59°
13
79°
62°
14
80°
63°
15
85°
62°
16
84°
51°
17
78°
50°
18
75°
49°
19
72°
51°
20
74°
52°
21
75°
58°
22
80°
61°
23
81°
60°
24
82°
49°
25
81°
48°
26
73°
49°
27
70°
48°
28
71°
46°
29
71°
47°
30
70°
48°
1
Hist. Avg.
74°
50°
2
Hist. Avg.
74°
50°
3
Hist. Avg.
74°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Concordia
Concordia's September 2026 forecast shows daily high temperatures ranging from 70° to 90°, with overnight lows between 46° and 66°. The average high for September is 80° 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 Concordia. See also: October | November | December.