S
M
T
W
T
F
S
30
89°
71°
31
89°
71°
1
90°
70°
2
90°
71°
3
89°
70°
4
88°
69°
5
89°
71°
6
90°
71°
7
90°
70°
8
89°
71°
9
90°
70°
10
88°
69°
11
88°
70°
12
90°
70°
13
89°
69°
14
78°
59°
15
76°
66°
16
78°
66°
17
77°
60°
18
85°
57°
19
76°
55°
20
77°
55°
21
78°
59°
22
82°
62°
23
83°
61°
24
78°
55°
25
74°
60°
26
78°
63°
27
82°
58°
28
79°
53°
29
71°
52°
30
72°
55°
1
74°
59°
2
80°
59°
3
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Busch Stadium
Busch Stadium's September 2026 forecast shows daily high temperatures ranging from 71° to 90°, with overnight lows between 52° and 71°. The average high for September is 83° with an average low of 64°. 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 Busch Stadium. See also: October | November | December.
