S
M
T
W
T
F
S
26
79°
55°
27
77°
55°
28
73°
54°
29
76°
55°
30
79°
56°
31
80°
56°
1
79°
54°
2
77°
54°
3
78°
55°
4
78°
55°
5
79°
54°
6
79°
55°
7
76°
45°
8
78°
49°
9
79°
47°
10
71°
43°
11
68°
42°
12
69°
43°
13
70°
43°
14
73°
48°
15
74°
51°
16
75°
52°
17
77°
51°
18
77°
50°
19
76°
51°
20
78°
44°
21
70°
41°
22
68°
45°
23
70°
51°
24
76°
50°
25
73°
43°
26
70°
40°
27
66°
39°
28
66°
41°
29
67°
42°
30
72°
41°
31
71°
40°
1
70°
41°
2
69°
45°
3
69°
46°
4
72°
48°
5
72°
48°
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 66° to 80°, with overnight lows between 39° and 56°. The average high for August is 74° with an average low of 48°. 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.
