S
M
T
W
T
F
S
26
80°
61°
27
86°
73°
28
79°
70°
29
70°
61°
30
66°
55°
1
70°
51°
2
74°
49°
3
81°
44°
4
80°
57°
5
76°
65°
6
73°
51°
7
72°
49°
8
76°
51°
9
85°
59°
10
79°
65°
11
78°
54°
12
80°
54°
13
86°
58°
14
81°
67°
15
88°
65°
16
83°
70°
17
86°
73°
18
85°
70°
19
81°
67°
20
80°
65°
21
82°
64°
22
85°
68°
23
85°
69°
24
84°
67°
25
79°
71°
26
85°
67°
27
85°
67°
28
83°
66°
29
86°
68°
30
85°
68°
31
84°
67°
1
85°
69°
2
87°
69°
3
85°
68°
4
83°
69°
5
85°
68°
6
87°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Royal
Royal's May 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 54° and 73°. The average high for May is 84° with an average low of 67°. 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 Royal. See also: June | July | August.