S
M
T
W
T
F
S
30
92°
71°
31
92°
72°
1
93°
70°
2
93°
70°
3
90°
72°
4
90°
73°
5
91°
73°
6
92°
72°
7
91°
72°
8
91°
71°
9
90°
73°
10
91°
72°
11
86°
72°
12
86°
71°
13
85°
71°
14
85°
70°
15
86°
71°
16
86°
71°
17
88°
70°
18
88°
70°
19
89°
69°
20
89°
70°
21
90°
70°
22
90°
69°
23
89°
70°
24
89°
69°
25
88°
69°
26
89°
68°
27
89°
69°
28
90°
68°
29
89°
67°
30
87°
67°
1
87°
66°
2
83°
60°
3
82°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Baton Rouge Terrace
Baton Rouge Terrace's September 2026 forecast shows daily high temperatures ranging from 82° to 93°, with overnight lows between 58° and 73°. The average high for September is 89° with an average low of 70°. 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 Baton Rouge Terrace. See also: October | November | December.