S
M
T
W
T
F
S
30
88°
66°
31
90°
69°
1
88°
68°
2
85°
70°
3
86°
68°
4
90°
70°
5
89°
70°
6
89°
69°
7
88°
69°
8
88°
68°
9
87°
70°
10
88°
69°
11
84°
69°
12
87°
68°
13
83°
69°
14
85°
69°
15
88°
68°
16
87°
67°
17
88°
68°
18
88°
68°
19
87°
67°
20
88°
68°
21
89°
68°
22
88°
67°
23
88°
67°
24
87°
66°
25
86°
67°
26
87°
66°
27
87°
66°
28
86°
64°
29
85°
64°
30
83°
63°
1
85°
64°
2
79°
59°
3
83°
54°
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 79° to 90°, with overnight lows between 54° and 70°. The average high for September is 87° 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.