S
M
T
W
T
F
S
26
70°
55°
27
76°
54°
28
77°
54°
29
69°
53°
30
68°
49°
31
70°
54°
1
69°
53°
2
75°
55°
3
77°
47°
4
75°
47°
5
73°
48°
6
78°
52°
7
79°
53°
8
78°
48°
9
74°
49°
10
70°
43°
11
70°
43°
12
71°
47°
13
70°
47°
14
68°
43°
15
68°
44°
16
71°
51°
17
75°
50°
18
76°
51°
19
77°
50°
20
73°
49°
21
71°
45°
22
69°
43°
23
65°
42°
24
65°
48°
25
67°
50°
26
74°
51°
27
75°
41°
28
66°
40°
29
64°
40°
30
65°
41°
31
68°
45°
1
73°
47°
2
71°
49°
3
73°
48°
4
72°
46°
5
72°
41°
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 64° to 79°, with overnight lows between 40° and 55°. The average high for August is 72° 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.
