S
M
T
W
T
F
S
30
93°
73°
31
92°
74°
1
92°
73°
2
91°
74°
3
92°
74°
4
92°
73°
5
91°
73°
6
90°
72°
7
91°
74°
8
90°
73°
9
88°
74°
10
89°
74°
11
89°
73°
12
90°
74°
13
87°
73°
14
87°
73°
15
88°
72°
16
87°
73°
17
87°
73°
18
86°
72°
19
87°
68°
20
86°
67°
21
85°
69°
22
86°
71°
23
87°
71°
24
85°
70°
25
88°
71°
26
87°
70°
27
88°
69°
28
87°
70°
29
87°
69°
30
87°
68°
1
85°
68°
2
87°
67°
3
Hist. Avg.
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Thibodaux Junction
Thibodaux Junction's September 2026 forecast shows daily high temperatures ranging from 85° to 93°, with overnight lows between 67° and 74°. The average high for September is 88° with an average low of 72°. 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 Thibodaux Junction. See also: October | November | December.
