S
M
T
W
T
F
S
30
93°
75°
31
93°
75°
1
92°
74°
2
91°
75°
3
93°
75°
4
94°
78°
5
94°
77°
6
93°
77°
7
92°
75°
8
92°
77°
9
91°
76°
10
92°
76°
11
90°
75°
12
89°
76°
13
91°
76°
14
90°
75°
15
90°
75°
16
88°
74°
17
91°
75°
18
91°
74°
19
90°
74°
20
90°
73°
21
91°
74°
22
90°
74°
23
91°
73°
24
91°
73°
25
90°
72°
26
90°
71°
27
89°
72°
28
89°
72°
29
88°
71°
30
88°
72°
1
87°
71°
2
89°
71°
3
89°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Westwego
Westwego's September 2026 forecast shows daily high temperatures ranging from 87° to 94°, with overnight lows between 71° and 78°. The average high for September is 91° with an average low of 74°. 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 Westwego. See also: October | November | December.