S
M
T
W
T
F
S
30
100°
71°
31
101°
73°
1
101°
69°
2
100°
73°
3
99°
75°
4
100°
74°
5
100°
72°
6
98°
73°
7
94°
72°
8
98°
76°
9
91°
67°
10
86°
61°
11
87°
67°
12
88°
67°
13
87°
68°
14
87°
61°
15
77°
54°
16
74°
57°
17
75°
54°
18
73°
55°
19
73°
56°
20
75°
56°
21
77°
55°
22
82°
61°
23
82°
62°
24
83°
62°
25
82°
61°
26
81°
61°
27
80°
60°
28
80°
61°
29
79°
60°
30
76°
56°
1
72°
50°
2
66°
46°
3
65°
45°
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 65° to 98°, with overnight lows between 45° and 76°. The average high for September is 80° with an average low of 59°. 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.