S
M
T
W
T
F
S
30
75°
54°
31
73°
47°
1
72°
42°
2
65°
44°
3
64°
50°
4
68°
53°
5
71°
51°
6
72°
43°
7
64°
43°
8
66°
47°
9
69°
47°
10
61°
51°
11
70°
50°
12
69°
50°
13
68°
48°
14
60°
43°
15
59°
40°
16
59°
39°
17
60°
48°
18
61°
39°
19
58°
49°
20
63°
48°
21
66°
41°
22
60°
37°
23
57°
39°
24
56°
38°
25
53°
38°
26
59°
41°
27
63°
46°
28
62°
46°
29
Hist. Avg.
61°
44°
30
Hist. Avg.
61°
43°
1
Hist. Avg.
60°
43°
2
Hist. Avg.
60°
42°
3
Hist. Avg.
60°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lac-Bouchette
Lac-Bouchette's September 2026 forecast shows daily high temperatures ranging from 53° to 75°, with overnight lows between 37° and 54°. The average high for September is 64° with an average low of 45°. 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 Lac-Bouchette. See also: October | November | December.