S
M
T
W
T
F
S
30
92°
77°
31
89°
77°
1
90°
76°
2
92°
77°
3
92°
77°
4
91°
76°
5
89°
76°
6
90°
75°
7
90°
76°
8
89°
75°
9
91°
75°
10
92°
74°
11
92°
75°
12
91°
74°
13
89°
75°
14
89°
72°
15
89°
72°
16
91°
73°
17
92°
74°
18
91°
70°
19
88°
71°
20
85°
69°
21
85°
69°
22
87°
71°
23
89°
70°
24
90°
68°
25
89°
70°
26
89°
70°
27
84°
69°
28
83°
67°
29
88°
68°
30
87°
68°
1
88°
67°
2
88°
67°
3
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lafourche Crossing
Lafourche Crossing's September 2026 forecast shows daily high temperatures ranging from 83° to 92°, with overnight lows between 66° and 77°. The average high for September is 89° with an average low of 72°. 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 Lafourche Crossing. See also: October | November | December.
