S
M
T
W
T
F
S
26
54°
40°
27
48°
36°
28
56°
35°
29
61°
37°
30
64°
38°
1
66°
41°
2
72°
44°
3
76°
48°
4
75°
49°
5
62°
51°
6
63°
43°
7
74°
46°
8
76°
49°
9
73°
52°
10
77°
48°
11
87°
52°
12
90°
59°
13
87°
59°
14
71°
48°
15
76°
46°
16
68°
47°
17
54°
44°
18
55°
42°
19
64°
37°
20
69°
51°
21
67°
49°
22
71°
52°
23
80°
62°
24
83°
64°
25
85°
67°
26
83°
59°
27
65°
53°
28
71°
56°
29
78°
61°
30
84°
65°
31
80°
62°
1
84°
65°
2
76°
53°
3
78°
55°
4
81°
54°
5
81°
60°
6
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sun
Sun's May 2026 forecast shows daily high temperatures ranging from 65° to 85°, with overnight lows between 49° and 67°. The average high for May is 77° with an average low of 58°. 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 Sun. See also: June | July | August.
