S
M
T
W
T
F
S
26
70°
55°
27
69°
54°
28
70°
54°
29
70°
53°
30
69°
54°
31
70°
54°
1
71°
55°
2
70°
55°
3
72°
54°
4
78°
54°
5
73°
52°
6
72°
54°
7
73°
52°
8
78°
54°
9
78°
54°
10
77°
53°
11
78°
55°
12
72°
54°
13
73°
55°
14
73°
44°
15
68°
44°
16
70°
45°
17
69°
43°
18
71°
44°
19
70°
52°
20
75°
48°
21
78°
49°
22
77°
48°
23
80°
52°
24
77°
45°
25
74°
46°
26
76°
52°
27
75°
52°
28
71°
51°
29
77°
46°
30
67°
41°
31
65°
41°
1
65°
46°
2
71°
45°
3
76°
51°
4
75°
44°
5
69°
39°
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 65° to 80°, with overnight lows between 39° and 55°. The average high for August is 73° with an average low of 50°. 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.
