S
M
T
W
T
F
S
30
94°
71°
31
93°
71°
1
93°
73°
2
90°
72°
3
89°
69°
4
88°
71°
5
87°
72°
6
88°
71°
7
88°
70°
8
89°
72°
9
91°
71°
10
90°
71°
11
90°
70°
12
88°
70°
13
90°
71°
14
91°
65°
15
87°
65°
16
86°
66°
17
85°
67°
18
87°
69°
19
88°
69°
20
89°
68°
21
87°
69°
22
86°
68°
23
87°
68°
24
84°
67°
25
84°
67°
26
85°
66°
27
86°
67°
28
86°
67°
29
87°
66°
30
87°
66°
1
86°
65°
2
87°
66°
3
87°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Acadiana
Acadiana's September 2026 forecast shows daily high temperatures ranging from 84° to 94°, with overnight lows between 61° and 73°. The average high for September is 88° 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 Acadiana. See also: October | November | December.
