S
M
T
W
T
F
S
30
73°
49°
31
70°
47°
1
77°
45°
2
70°
54°
3
73°
56°
4
74°
54°
5
69°
52°
6
67°
47°
7
75°
41°
8
69°
42°
9
67°
41°
10
71°
46°
11
62°
41°
12
74°
38°
13
76°
54°
14
64°
37°
15
69°
33°
16
71°
51°
17
73°
49°
18
64°
38°
19
60°
31°
20
56°
44°
21
57°
35°
22
62°
36°
23
66°
34°
24
68°
39°
25
69°
42°
26
68°
43°
27
68°
43°
28
67°
47°
29
70°
46°
30
68°
46°
1
66°
47°
2
67°
37°
3
57°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in L'Oiseau-Bleu
L'Oiseau-Bleu's September 2026 forecast shows daily high temperatures ranging from 56° to 70°, with overnight lows between 34° and 47°. The average high for September is 65° with an average low of 41°. 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 L'Oiseau-Bleu. See also: October | November | December.