S
M
T
W
T
F
S
30
88°
78°
31
90°
78°
1
93°
77°
2
94°
76°
3
92°
75°
4
87°
76°
5
92°
75°
6
93°
75°
7
93°
77°
8
93°
75°
9
93°
75°
10
90°
77°
11
89°
75°
12
89°
74°
13
92°
74°
14
95°
75°
15
95°
75°
16
93°
80°
17
90°
70°
18
92°
68°
19
94°
70°
20
93°
73°
21
92°
73°
22
93°
72°
23
94°
71°
24
90°
68°
25
86°
64°
26
87°
65°
27
87°
64°
28
86°
70°
29
85°
74°
30
84°
70°
1
85°
69°
2
86°
68°
3
84°
69°
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 94°, with overnight lows between 64° and 74°. The average high for September is 87° with an average low of 68°. 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.