S
M
T
W
T
F
S
30
89°
76°
31
88°
75°
1
88°
76°
2
89°
75°
3
89°
76°
4
88°
75°
5
87°
74°
6
86°
75°
7
87°
75°
8
88°
74°
9
87°
75°
10
89°
76°
11
90°
76°
12
90°
75°
13
89°
74°
14
88°
74°
15
87°
73°
16
88°
73°
17
88°
72°
18
85°
73°
19
85°
72°
20
84°
73°
21
86°
69°
22
85°
68°
23
89°
67°
24
87°
68°
25
86°
71°
26
85°
67°
27
86°
70°
28
88°
70°
29
88°
69°
30
86°
69°
1
87°
68°
2
88°
67°
3
87°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Theodore
Theodore's September 2026 forecast shows daily high temperatures ranging from 84° to 90°, with overnight lows between 67° and 76°. The average high for September is 87° with an average low of 72°. 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 Theodore. See also: October | November | December.