S
M
T
W
T
F
S
26
70°
48°
27
82°
41°
28
72°
50°
29
66°
50°
30
54°
37°
1
64°
34°
2
52°
34°
3
59°
30°
4
72°
46°
5
77°
59°
6
63°
48°
7
63°
43°
8
68°
34°
9
70°
52°
10
72°
52°
11
68°
43°
12
73°
37°
13
72°
48°
14
50°
41°
15
70°
37°
16
77°
46°
17
88°
59°
18
93°
64°
19
91°
68°
20
86°
61°
21
61°
55°
22
63°
55°
23
81°
55°
24
81°
57°
25
74°
62°
26
74°
67°
27
71°
62°
28
76°
53°
29
78°
51°
30
70°
45°
31
69°
43°
1
70°
48°
2
72°
49°
3
73°
52°
4
78°
53°
5
77°
56°
6
79°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Diana
Diana's May 2026 forecast shows daily high temperatures ranging from 69° to 79°, with overnight lows between 43° and 67°. The average high for May is 74° with an average low of 54°. 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 Diana. See also: June | July | August.