S
M
T
W
T
F
S
26
88°
67°
27
92°
67°
28
84°
65°
29
82°
65°
30
86°
66°
31
91°
64°
1
88°
66°
2
82°
72°
3
91°
70°
4
92°
63°
5
88°
72°
6
95°
72°
7
90°
72°
8
88°
71°
9
93°
73°
10
88°
68°
11
87°
70°
12
87°
73°
13
90°
74°
14
84°
70°
15
90°
66°
16
76°
72°
17
92°
72°
18
83°
61°
19
88°
71°
20
84°
64°
21
83°
58°
22
83°
60°
23
85°
62°
24
82°
60°
25
83°
61°
26
87°
60°
27
85°
60°
28
83°
59°
29
83°
62°
30
88°
66°
31
86°
64°
1
89°
66°
2
86°
63°
3
82°
62°
4
87°
63°
5
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rockhill
Rockhill's August 2026 forecast shows daily high temperatures ranging from 82° to 89°, with overnight lows between 59° and 66°. The average high for August is 85° with an average low of 63°. 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 Rockhill. See also: September | October | November.