S
M
T
W
T
F
S
26
73°
49°
27
72°
48°
28
75°
43°
29
77°
44°
30
78°
38°
31
81°
40°
1
80°
42°
2
52°
41°
3
67°
40°
4
71°
32°
5
79°
38°
6
79°
42°
7
80°
41°
8
75°
45°
9
74°
41°
10
76°
44°
11
73°
46°
12
69°
45°
13
60°
44°
14
69°
44°
15
71°
36°
16
75°
36°
17
72°
37°
18
71°
46°
19
80°
49°
20
79°
45°
21
82°
46°
22
83°
43°
23
67°
48°
24
75°
44°
25
82°
39°
26
79°
40°
27
81°
41°
28
67°
41°
29
67°
36°
30
58°
38°
31
65°
42°
1
75°
34°
2
72°
42°
3
58°
43°
4
51°
39°
5
51°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lake Louise
Lake Louise's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August 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 August weather will actually feel in Lake Louise. See also: September | October | November.