S
M
T
W
T
F
S
26
74°
56°
27
72°
52°
28
64°
51°
29
80°
60°
30
75°
57°
1
63°
54°
2
61°
46°
3
71°
42°
4
80°
47°
5
79°
54°
6
78°
61°
7
77°
57°
8
71°
53°
9
73°
55°
10
83°
58°
11
71°
54°
12
72°
48°
13
77°
47°
14
74°
53°
15
75°
46°
16
82°
53°
17
89°
66°
18
90°
66°
19
90°
66°
20
90°
69°
21
89°
64°
22
73°
63°
23
67°
62°
24
81°
60°
25
84°
68°
26
84°
68°
27
86°
68°
28
88°
68°
29
84°
66°
30
84°
63°
31
76°
64°
1
82°
64°
2
75°
54°
3
78°
55°
4
84°
58°
5
86°
64°
6
90°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rock Hill
Rock Hill's May 2026 forecast shows daily high temperatures ranging from 75° to 90°, with overnight lows between 54° and 66°. The average high for May is 82° with an average low of 61°. 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 Rock Hill. See also: June | July | August.