S
M
T
W
T
F
S
26
32°
17°
27
50°
15°
28
60°
20°
29
63°
24°
30
70°
28°
1
75°
35°
2
68°
43°
3
75°
33°
4
59°
39°
5
53°
26°
6
75°
23°
7
72°
40°
8
75°
40°
9
71°
42°
10
77°
44°
11
68°
41°
12
79°
33°
13
80°
44°
14
66°
49°
15
63°
44°
16
57°
37°
17
50°
31°
18
61°
38°
19
65°
39°
20
60°
41°
21
66°
44°
22
64°
43°
23
72°
48°
24
74°
49°
25
73°
47°
26
67°
44°
27
70°
46°
28
70°
47°
29
73°
50°
30
78°
46°
31
67°
48°
1
70°
49°
2
72°
49°
3
73°
50°
4
73°
50°
5
66°
49°
6
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lethbridge
Lethbridge's May 2026 forecast shows daily high temperatures ranging from 50° to 78°, with overnight lows between 31° and 50°. The average high for May is 68° 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 Lethbridge. See also: June | July | August.
