S
M
T
W
T
F
S
30
91°
70°
31
92°
69°
1
92°
70°
2
91°
70°
3
91°
69°
4
90°
70°
5
91°
70°
6
91°
69°
7
90°
65°
8
85°
67°
9
88°
68°
10
86°
64°
11
88°
65°
12
87°
65°
13
88°
66°
14
90°
67°
15
89°
66°
16
84°
67°
17
86°
64°
18
83°
62°
19
82°
66°
20
83°
62°
21
82°
60°
22
81°
62°
23
80°
65°
24
81°
65°
25
85°
64°
26
85°
65°
27
81°
64°
28
83°
64°
29
83°
63°
30
81°
63°
1
80°
62°
2
82°
57°
3
78°
56°
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 78° to 92°, with overnight lows between 56° and 70°. The average high for September is 86° 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 Monroeville. See also: October | November | December.