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
60°
38°
17
49°
30°
18
61°
26°
19
64°
33°
20
56°
39°
21
64°
37°
22
70°
36°
23
77°
51°
24
78°
49°
25
84°
53°
26
76°
51°
27
66°
48°
28
74°
49°
29
76°
52°
30
73°
50°
31
72°
48°
1
72°
45°
2
74°
45°
3
77°
48°
4
77°
51°
5
80°
56°
6
72°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lethbridge County Airport
Lethbridge County Airport's May 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 45° and 56°. The average high for May is 75° with an average low of 50°. 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 County Airport. See also: June | July | August.