S
M
T
W
T
F
S
30
70°
56°
31
71°
51°
1
76°
47°
2
78°
59°
3
69°
54°
4
68°
52°
5
55°
50°
6
63°
52°
7
62°
50°
8
70°
47°
9
70°
51°
10
66°
51°
11
55°
46°
12
55°
40°
13
66°
35°
14
56°
41°
15
54°
40°
16
64°
33°
17
73°
40°
18
68°
40°
19
76°
41°
20
72°
47°
21
76°
41°
22
68°
44°
23
63°
40°
24
N/A
25
64°
43°
26
49°
36°
27
59°
38°
28
61°
41°
29
55°
35°
30
54°
39°
1
52°
37°
2
53°
32°
3
50°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lac La Biche
Lac La Biche's September 2026 forecast shows daily high temperatures ranging from 49° to 64°, with overnight lows between 32° and 43°. The average high for September is 55° with an average low of 37°. 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 La Biche. See also: October | November | December.