S
M
T
W
T
F
S
30
92°
75°
31
91°
76°
1
90°
76°
2
91°
75°
3
93°
75°
4
90°
75°
5
89°
74°
6
96°
72°
7
95°
75°
8
92°
75°
9
92°
74°
10
82°
74°
11
89°
72°
12
91°
72°
13
97°
72°
14
96°
73°
15
97°
72°
16
91°
76°
17
90°
71°
18
91°
70°
19
94°
70°
20
96°
72°
21
97°
73°
22
N/A
23
N/A
24
91°
71°
25
89°
68°
26
N/A
27
92°
67°
28
N/A
29
90°
69°
30
91°
68°
1
89°
76°
2
87°
76°
3
84°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Laplace
Laplace's September 2026 forecast shows daily high temperatures ranging from 84° to 89°, with overnight lows between 76° and 76°. The average high for September is 87° with an average low of 76°. 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 Laplace. See also: October | November | December.