S
M
T
W
T
F
S
26
81°
58°
27
86°
63°
28
72°
57°
29
70°
52°
30
65°
44°
1
67°
45°
2
68°
43°
3
78°
39°
4
81°
58°
5
66°
46°
6
61°
45°
7
68°
40°
8
77°
46°
9
83°
53°
10
73°
54°
11
76°
48°
12
79°
48°
13
79°
57°
14
78°
48°
15
84°
71°
16
84°
68°
17
87°
72°
18
80°
73°
19
75°
61°
20
70°
50°
21
77°
51°
22
78°
52°
23
80°
60°
24
80°
61°
25
82°
61°
26
80°
64°
27
81°
63°
28
80°
57°
29
82°
61°
30
79°
59°
31
78°
59°
1
77°
61°
2
77°
61°
3
78°
62°
4
83°
63°
5
84°
63°
6
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Diamond Bay
Diamond Bay's May 2026 forecast shows daily high temperatures ranging from 70° to 87°, with overnight lows between 50° and 73°. The average high for May is 80° with an average low of 62°. 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 Diamond Bay. See also: June | July | August.