S
M
T
W
T
F
S
30
94°
71°
31
95°
70°
1
93°
69°
2
90°
70°
3
91°
70°
4
90°
69°
5
89°
69°
6
88°
68°
7
88°
68°
8
89°
69°
9
89°
66°
10
88°
68°
11
87°
65°
12
90°
68°
13
92°
68°
14
90°
61°
15
87°
61°
16
85°
62°
17
86°
61°
18
88°
62°
19
91°
61°
20
90°
65°
21
90°
65°
22
86°
66°
23
87°
64°
24
87°
60°
25
86°
60°
26
88°
59°
27
87°
60°
28
88°
61°
29
88°
62°
30
89°
63°
1
89°
61°
2
88°
62°
3
88°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cottonton
Cottonton's September 2026 forecast shows daily high temperatures ranging from 85° to 95°, with overnight lows between 59° and 71°. 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 Cottonton. See also: October | November | December.