S
M
T
W
T
F
S
30
102°
78°
31
100°
75°
1
101°
76°
2
102°
77°
3
101°
77°
4
98°
75°
5
100°
75°
6
100°
72°
7
98°
75°
8
99°
72°
9
97°
66°
10
91°
64°
11
86°
63°
12
85°
60°
13
85°
60°
14
86°
64°
15
87°
63°
16
87°
64°
17
86°
65°
18
87°
65°
19
87°
63°
20
85°
64°
21
86°
64°
22
86°
63°
23
85°
63°
24
84°
62°
25
83°
62°
26
84°
61°
27
83°
60°
28
83°
60°
29
82°
59°
30
83°
60°
1
82°
60°
2
82°
59°
3
81°
59°
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 81° to 102°, with overnight lows between 59° and 77°. The average high for September is 89° with an average low of 65°. 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.