S
M
T
W
T
F
S
26
79°
53°
27
78°
54°
28
80°
53°
29
81°
50°
30
78°
49°
31
74°
47°
1
69°
48°
2
69°
46°
3
70°
44°
4
70°
50°
5
75°
53°
6
78°
53°
7
79°
52°
8
79°
53°
9
80°
45°
10
74°
48°
11
75°
48°
12
76°
50°
13
72°
42°
14
68°
44°
15
71°
50°
16
76°
50°
17
77°
49°
18
78°
50°
19
77°
50°
20
73°
43°
21
70°
41°
22
66°
40°
23
65°
41°
24
67°
44°
25
72°
46°
26
74°
42°
27
73°
38°
28
65°
38°
29
62°
37°
30
63°
39°
31
66°
42°
1
67°
43°
2
66°
41°
3
65°
40°
4
64°
37°
5
65°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Banff Trail
Banff Trail's August 2026 forecast shows daily high temperatures ranging from 62° to 81°, with overnight lows between 37° and 54°. The average high for August is 72° with an average low of 46°. 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 Banff Trail. See also: September | October | November.