S
M
T
W
T
F
S
26
65°
48°
27
79°
41°
28
77°
54°
29
69°
49°
30
58°
38°
1
58°
33°
2
56°
30°
3
63°
47°
4
72°
57°
5
72°
55°
6
58°
44°
7
57°
37°
8
58°
45°
9
59°
38°
10
64°
44°
11
65°
42°
12
66°
45°
13
66°
47°
14
68°
46°
15
67°
48°
16
69°
47°
17
76°
53°
18
75°
53°
19
73°
52°
20
77°
50°
21
73°
49°
22
68°
44°
23
66°
44°
24
68°
47°
25
68°
49°
26
69°
46°
27
68°
46°
28
69°
47°
29
70°
47°
30
71°
50°
31
77°
56°
1
72°
53°
2
73°
51°
3
73°
53°
4
74°
55°
5
78°
57°
6
81°
58°
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 57° to 81°, with overnight lows between 37° and 58°. The average high for May is 69° with an average low of 49°. 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.