S
M
T
W
T
F
S
30
95°
72°
31
94°
73°
1
87°
73°
2
90°
72°
3
94°
72°
4
91°
73°
5
88°
72°
6
91°
73°
7
93°
73°
8
97°
72°
9
95°
73°
10
93°
72°
11
91°
69°
12
92°
71°
13
91°
70°
14
90°
67°
15
85°
70°
16
86°
70°
17
87°
69°
18
88°
69°
19
86°
70°
20
85°
70°
21
84°
69°
22
84°
68°
23
86°
68°
24
87°
67°
25
88°
67°
26
88°
66°
27
89°
67°
28
89°
66°
29
88°
65°
30
89°
66°
1
88°
66°
2
86°
65°
3
84°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Saint Landry
Saint Landry's September 2026 forecast shows daily high temperatures ranging from 84° to 97°, with overnight lows between 65° and 73°. The average high for September is 89° with an average low of 69°. 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 Saint Landry. See also: October | November | December.