S
M
T
W
T
F
S
30
98°
72°
31
97°
71°
1
96°
73°
2
88°
76°
3
94°
73°
4
97°
72°
5
96°
74°
6
95°
74°
7
98°
75°
8
98°
74°
9
96°
73°
10
94°
72°
11
94°
72°
12
97°
68°
13
97°
69°
14
93°
68°
15
91°
67°
16
92°
66°
17
90°
66°
18
91°
64°
19
88°
60°
20
85°
59°
21
87°
62°
22
91°
67°
23
90°
67°
24
90°
66°
25
89°
66°
26
89°
65°
27
88°
65°
28
88°
64°
29
87°
65°
30
87°
64°
1
84°
56°
2
76°
55°
3
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Coushatta
Coushatta's September 2026 forecast shows daily high temperatures ranging from 76° to 98°, with overnight lows between 54° and 74°. The average high for September is 90° 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 Coushatta. See also: October | November | December.