S
M
T
W
T
F
S
26
86°
73°
27
91°
71°
28
93°
72°
29
91°
69°
30
87°
64°
31
89°
64°
1
88°
71°
2
82°
72°
3
89°
72°
4
86°
72°
5
88°
71°
6
89°
70°
7
89°
68°
8
91°
72°
9
92°
70°
10
91°
70°
11
93°
69°
12
90°
70°
13
94°
70°
14
95°
71°
15
95°
75°
16
95°
74°
17
96°
74°
18
93°
71°
19
93°
72°
20
94°
72°
21
90°
71°
22
87°
68°
23
90°
65°
24
89°
66°
25
88°
70°
26
87°
70°
27
87°
69°
28
88°
70°
29
84°
66°
30
87°
67°
31
86°
66°
1
84°
65°
2
84°
67°
3
81°
68°
4
90°
71°
5
90°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rock Hill
Rock Hill's August 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 65° and 71°. The average high for August is 87° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Rock Hill. See also: September | October | November.