S
M
T
W
T
F
S
26
57°
36°
27
48°
32°
28
55°
27°
29
55°
36°
30
59°
37°
1
66°
36°
2
68°
37°
3
73°
39°
4
73°
45°
5
68°
48°
6
70°
32°
7
73°
46°
8
75°
45°
9
73°
37°
10
75°
43°
11
81°
46°
12
84°
48°
13
79°
54°
14
66°
36°
15
64°
43°
16
57°
37°
17
54°
34°
18
59°
37°
19
63°
34°
20
66°
36°
21
70°
39°
22
70°
37°
23
75°
39°
24
80°
47°
25
78°
47°
26
67°
43°
27
66°
47°
28
73°
47°
29
62°
43°
30
71°
46°
31
74°
45°
1
73°
49°
2
80°
51°
3
80°
49°
4
76°
50°
5
75°
49°
6
65°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hailey-Bellevue
Hailey-Bellevue's May 2026 forecast shows daily high temperatures ranging from 62° to 80°, with overnight lows between 43° and 51°. The average high for May is 73° with an average low of 47°. 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 Hailey-Bellevue. See also: June | July | August.