S
M
T
W
T
F
S
30
91°
82°
31
89°
79°
1
92°
81°
2
93°
80°
3
92°
76°
4
88°
77°
5
92°
77°
6
93°
77°
7
92°
77°
8
88°
77°
9
87°
76°
10
88°
77°
11
89°
75°
12
90°
77°
13
92°
78°
14
94°
77°
15
92°
76°
16
93°
75°
17
92°
77°
18
93°
77°
19
90°
75°
20
89°
73°
21
91°
76°
22
92°
76°
23
91°
75°
24
91°
76°
25
90°
75°
26
90°
75°
27
88°
74°
28
87°
75°
29
86°
75°
30
88°
74°
1
87°
71°
2
84°
67°
3
82°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Marrero
Marrero's September 2026 forecast shows daily high temperatures ranging from 82° to 94°, with overnight lows between 66° and 78°. The average high for September is 89° with an average low of 75°. 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 Marrero. See also: October | November | December.