S
M
T
W
T
F
S
26
77°
51°
27
78°
52°
28
78°
48°
29
77°
50°
30
78°
50°
31
77°
41°
1
70°
43°
2
70°
44°
3
72°
47°
4
70°
46°
5
73°
46°
6
77°
50°
7
73°
48°
8
69°
46°
9
70°
47°
10
75°
49°
11
77°
51°
12
78°
46°
13
69°
47°
14
70°
49°
15
76°
45°
16
68°
46°
17
65°
47°
18
68°
44°
19
67°
43°
20
68°
46°
21
71°
45°
22
68°
41°
23
Hist. Avg.
70°
46°
24
Hist. Avg.
70°
45°
25
Hist. Avg.
70°
45°
26
Hist. Avg.
70°
45°
27
Hist. Avg.
69°
44°
28
Hist. Avg.
69°
44°
29
Hist. Avg.
69°
44°
30
Hist. Avg.
68°
44°
31
Hist. Avg.
68°
43°
1
Hist. Avg.
68°
43°
2
Hist. Avg.
68°
43°
3
Hist. Avg.
67°
43°
4
Hist. Avg.
67°
42°
5
Hist. Avg.
67°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Banff Trail
Banff Trail's August 2026 forecast shows daily high temperatures ranging from 65° to 78°, with overnight lows between 41° and 52°. The average high for August is 72° with an average low of 47°. 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.