S
M
T
W
T
F
S
26
63°
39°
27
67°
48°
28
62°
49°
29
58°
38°
30
57°
35°
1
52°
34°
2
55°
41°
3
65°
44°
4
73°
46°
5
52°
40°
6
52°
39°
7
54°
38°
8
60°
40°
9
63°
44°
10
64°
45°
11
65°
45°
12
65°
48°
13
66°
51°
14
68°
48°
15
70°
47°
16
70°
54°
17
71°
50°
18
65°
50°
19
71°
53°
20
70°
53°
21
67°
44°
22
64°
43°
23
64°
45°
24
66°
45°
25
66°
46°
26
67°
46°
27
66°
47°
28
67°
46°
29
68°
51°
30
69°
57°
31
76°
52°
1
70°
52°
2
73°
57°
3
76°
57°
4
78°
58°
5
78°
59°
6
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cary
Cary's May 2026 forecast shows daily high temperatures ranging from 52° to 79°, with overnight lows between 38° and 60°. The average high for May is 67° with an average low of 48°. 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 Cary. See also: June | July | August.