S
M
T
W
T
F
S
26
29°
18°
27
46°
21°
28
57°
26°
29
60°
27°
30
69°
38°
1
70°
44°
2
67°
45°
3
71°
45°
4
57°
39°
5
51°
36°
6
72°
31°
7
70°
51°
8
70°
42°
9
65°
47°
10
72°
45°
11
62°
45°
12
74°
38°
13
75°
49°
14
66°
44°
15
59°
35°
16
43°
30°
17
47°
30°
18
56°
33°
19
61°
40°
20
62°
44°
21
62°
41°
22
58°
40°
23
59°
41°
24
61°
40°
25
66°
46°
26
69°
43°
27
71°
44°
28
59°
42°
29
58°
39°
30
63°
45°
31
65°
45°
1
65°
44°
2
67°
45°
3
63°
40°
4
63°
45°
5
59°
40°
6
59°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Calgary
Calgary's May 2026 forecast shows daily high temperatures ranging from 43° to 71°, with overnight lows between 30° and 46°. The average high for May is 61° with an average low of 41°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Calgary. See also: June | July | August.
