S
M
T
W
T
F
S
30
89°
70°
31
90°
71°
1
90°
70°
2
89°
70°
3
89°
69°
4
90°
70°
5
90°
70°
6
89°
69°
7
89°
70°
8
88°
70°
9
87°
69°
10
89°
70°
11
88°
69°
12
84°
68°
13
85°
69°
14
88°
69°
15
88°
68°
16
87°
68°
17
87°
67°
18
88°
68°
19
87°
65°
20
81°
62°
21
82°
64°
22
86°
65°
23
87°
66°
24
86°
66°
25
81°
64°
26
84°
65°
27
86°
63°
28
87°
64°
29
86°
65°
30
85°
57°
1
83°
57°
2
80°
62°
3
81°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Monroeville
Monroeville's September 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 57° and 71°. The average high for September is 86° with an average low of 67°. 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 Monroeville. See also: October | November | December.