S
M
T
W
T
F
S
26
63°
41°
27
70°
39°
28
61°
45°
29
62°
44°
30
60°
41°
1
65°
48°
2
62°
47°
3
59°
49°
4
59°
46°
5
58°
42°
6
55°
41°
7
57°
42°
8
60°
45°
9
61°
46°
10
61°
47°
11
62°
46°
12
60°
44°
13
59°
44°
14
58°
41°
15
62°
47°
16
64°
48°
17
64°
48°
18
65°
47°
19
64°
47°
20
62°
46°
21
62°
44°
22
61°
43°
23
61°
44°
24
63°
45°
25
61°
42°
26
60°
43°
27
61°
48°
28
63°
49°
29
67°
50°
30
66°
45°
31
61°
44°
1
61°
44°
2
60°
43°
3
61°
45°
4
61°
44°
5
62°
45°
6
62°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Royston
Royston's May 2026 forecast shows daily high temperatures ranging from 55° to 67°, with overnight lows between 41° and 50°. The average high for May is 61° with an average low of 45°. 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 Royston. See also: June | July | August.