S
M
T
W
T
F
S
29
25°
18°
30
27°
16°
31
32°
6°
1
40°
14°
2
35°
28°
3
43°
28°
4
46°
32°
5
36°
28°
6
44°
26°
7
38°
29°
8
40°
26°
9
46°
24°
10
58°
27°
11
58°
30°
12
41°
30°
13
61°
33°
14
58°
36°
15
42°
19°
16
25°
15°
17
40°
11°
18
47°
24°
19
67°
29°
20
73°
38°
21
72°
44°
22
59°
36°
23
44°
30°
24
36°
26°
25
32°
18°
26
29°
19°
27
42°
24°
28
51°
31°
29
57°
35°
30
67°
43°
1
69°
41°
2
65°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Calgary International Airport
Calgary International Airport's April 2026 forecast shows daily high temperatures ranging from 29° to 69°, with overnight lows between 18° and 43°. The average high for April is 52° with an average low of 31°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Calgary International Airport. See also: May | June | July.
