S
M
T
W
T
F
S
26
48°
38°
27
48°
38°
28
50°
32°
29
64°
31°
30
55°
37°
1
56°
32°
2
74°
30°
3
72°
52°
4
70°
42°
5
56°
34°
6
54°
36°
7
67°
39°
8
69°
41°
9
72°
50°
10
65°
45°
11
69°
48°
12
79°
50°
13
76°
50°
14
77°
49°
15
75°
51°
16
72°
48°
17
74°
53°
18
75°
52°
19
76°
48°
20
74°
51°
21
69°
47°
22
67°
45°
23
68°
48°
24
69°
50°
25
68°
47°
26
68°
47°
27
69°
49°
28
69°
53°
29
70°
57°
30
72°
56°
31
71°
49°
1
72°
53°
2
74°
59°
3
80°
60°
4
81°
60°
5
82°
61°
6
77°
61°
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 54° to 82°, with overnight lows between 34° and 61°. The average high for May is 71° with an average low of 50°. 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.