S
M
T
W
T
F
S
26
56°
35°
27
53°
33°
28
57°
33°
29
60°
37°
30
48°
38°
1
61°
35°
2
70°
37°
3
75°
48°
4
75°
45°
5
46°
31°
6
39°
30°
7
70°
37°
8
68°
42°
9
75°
47°
10
68°
45°
11
85°
43°
12
77°
48°
13
89°
53°
14
86°
57°
15
83°
49°
16
78°
49°
17
68°
43°
18
44°
36°
19
51°
34°
20
58°
41°
21
73°
40°
22
64°
37°
23
75°
40°
24
84°
51°
25
86°
53°
26
81°
53°
27
76°
52°
28
80°
51°
29
84°
52°
30
80°
52°
31
78°
53°
1
79°
54°
2
79°
53°
3
80°
52°
4
81°
55°
5
82°
56°
6
81°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Roy
Roy's May 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 50° and 56°. The average high for May is 81° with an average low of 53°. 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 Roy. See also: June | July | August.