S
M
T
W
T
F
S
26
55°
54°
27
55°
52°
28
55°
50°
29
59°
52°
30
61°
52°
1
55°
54°
2
55°
50°
3
52°
52°
4
53°
41°
5
51°
37°
6
50°
40°
7
55°
44°
8
54°
38°
9
54°
41°
10
54°
43°
11
53°
44°
12
54°
43°
13
53°
46°
14
53°
46°
15
53°
45°
16
54°
46°
17
53°
48°
18
52°
48°
19
52°
47°
20
53°
47°
21
52°
48°
22
53°
48°
23
53°
49°
24
54°
49°
25
53°
48°
26
53°
49°
27
54°
46°
28
53°
46°
29
53°
47°
30
55°
49°
31
54°
50°
1
54°
50°
2
55°
48°
3
57°
50°
4
58°
50°
5
59°
51°
6
60°
50°
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 50° to 60°, with overnight lows between 37° and 51°. The average high for May is 54° with an average low of 46°. 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.
