S
M
T
W
T
F
S
26
77°
52°
27
78°
42°
28
79°
47°
29
78°
51°
30
N/A
31
88°
50°
1
88°
46°
2
68°
36°
3
69°
34°
4
76°
44°
5
83°
47°
6
82°
48°
7
77°
47°
8
77°
50°
9
79°
50°
10
77°
51°
11
79°
50°
12
78°
51°
13
72°
45°
14
75°
48°
15
70°
43°
16
71°
48°
17
70°
46°
18
74°
49°
19
74°
50°
20
70°
50°
21
66°
49°
22
69°
49°
23
70°
48°
24
66°
49°
25
73°
48°
26
72°
48°
27
73°
49°
28
72°
48°
29
68°
46°
30
63°
43°
31
65°
44°
1
65°
46°
2
71°
47°
3
71°
47°
4
70°
46°
5
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Banff
Banff's August 2026 forecast shows daily high temperatures ranging from 63° to 88°, with overnight lows between 34° and 51°. The average high for August is 73° 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. See also: September | October | November.
