S
M
T
W
T
F
S
26
84°
58°
27
83°
53°
28
86°
55°
29
80°
53°
30
78°
56°
31
86°
58°
1
89°
54°
2
78°
49°
3
70°
47°
4
76°
50°
5
75°
49°
6
72°
50°
7
73°
52°
8
82°
53°
9
79°
55°
10
74°
53°
11
72°
52°
12
68°
49°
13
76°
53°
14
72°
50°
15
67°
45°
16
67°
48°
17
71°
53°
18
67°
52°
19
70°
52°
20
77°
51°
21
76°
53°
22
76°
49°
23
69°
52°
24
77°
53°
25
76°
52°
26
75°
52°
27
68°
51°
28
69°
51°
29
73°
50°
30
73°
51°
31
64°
48°
1
64°
50°
2
62°
46°
3
62°
44°
4
61°
46°
5
61°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Calgary
Calgary's August 2026 forecast shows daily high temperatures ranging from 61° to 89°, with overnight lows between 44° and 58°. The average high for August is 73° with an average low of 51°. 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 Calgary. See also: September | October | November.
