S
M
T
W
T
F
S
30
88°
79°
31
88°
77°
1
88°
79°
2
87°
74°
3
91°
75°
4
87°
75°
5
85°
75°
6
88°
77°
7
88°
79°
8
89°
78°
9
88°
78°
10
89°
79°
11
89°
78°
12
88°
78°
13
88°
76°
14
89°
76°
15
86°
74°
16
83°
76°
17
83°
77°
18
83°
77°
19
83°
77°
20
84°
76°
21
84°
77°
22
85°
77°
23
84°
76°
24
82°
76°
25
82°
75°
26
83°
75°
27
82°
74°
28
81°
70°
29
79°
68°
30
79°
71°
1
80°
72°
2
80°
71°
3
81°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dulac
Dulac's September 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 67° and 79°. The average high for September is 85° 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 Dulac. See also: October | November | December.