S
M
T
W
T
F
S
26
29°
19°
27
46°
17°
28
57°
24°
29
59°
26°
30
66°
29°
1
70°
36°
2
67°
42°
3
74°
39°
4
54°
33°
5
49°
27°
6
71°
29°
7
70°
45°
8
71°
45°
9
67°
45°
10
73°
49°
11
68°
43°
12
75°
36°
13
77°
46°
14
58°
47°
15
57°
42°
16
55°
35°
17
45°
31°
18
56°
26°
19
63°
41°
20
49°
37°
21
62°
38°
22
66°
39°
23
70°
38°
24
74°
55°
25
81°
46°
26
82°
51°
27
78°
56°
28
84°
53°
29
79°
56°
30
58°
48°
31
48°
42°
1
44°
41°
2
49°
43°
3
66°
45°
4
67°
50°
5
69°
49°
6
64°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cardston
Cardston's May 2026 forecast shows daily high temperatures ranging from 64° to 64°, with overnight lows between 40° and 40°. The average high for May is 64° with an average low of 40°. 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 Cardston. See also: June | July | August.