S
M
T
W
T
F
S
30
58°
38°
31
65°
42°
1
75°
34°
2
72°
42°
3
58°
43°
4
51°
39°
5
51°
40°
6
60°
37°
7
64°
39°
8
63°
39°
9
60°
44°
10
55°
36°
11
58°
28°
12
65°
32°
13
60°
34°
14
55°
38°
15
49°
37°
16
62°
37°
17
70°
28°
18
72°
29°
19
72°
30°
20
73°
31°
21
73°
33°
22
67°
38°
23
64°
40°
24
59°
32°
25
57°
38°
26
44°
35°
27
50°
28°
28
54°
25°
29
45°
37°
30
46°
29°
1
47°
21°
2
42°
35°
3
54°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lake Louise
Lake Louise's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Lake Louise. See also: October | November | December.
