S
M
T
W
T
F
S
30
87°
71°
31
93°
70°
1
95°
71°
2
99°
72°
3
96°
71°
4
97°
72°
5
95°
70°
6
89°
70°
7
88°
67°
8
87°
66°
9
86°
67°
10
88°
67°
11
90°
67°
12
88°
64°
13
86°
63°
14
87°
64°
15
86°
67°
16
85°
67°
17
82°
66°
18
83°
65°
19
79°
61°
20
79°
61°
21
80°
63°
22
81°
64°
23
82°
64°
24
84°
65°
25
84°
65°
26
79°
64°
27
78°
65°
28
81°
64°
29
78°
63°
30
79°
62°
1
76°
62°
2
76°
61°
3
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grace P. Johnson Stadium
Grace P. Johnson Stadium's September 2026 forecast shows daily high temperatures ranging from 76° to 99°, with overnight lows between 61° and 72°. The average high for September is 85° 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 Grace P. Johnson Stadium. See also: October | November | December.