S
M
T
W
T
F
S
30
87°
70°
31
93°
66°
1
95°
69°
2
97°
71°
3
98°
74°
4
97°
73°
5
98°
70°
6
89°
68°
7
86°
67°
8
87°
61°
9
90°
61°
10
94°
66°
11
97°
71°
12
86°
70°
13
87°
70°
14
92°
71°
15
87°
64°
16
87°
66°
17
89°
69°
18
87°
68°
19
84°
64°
20
83°
61°
21
77°
57°
22
77°
58°
23
82°
61°
24
81°
60°
25
82°
60°
26
80°
60°
27
83°
62°
28
84°
64°
29
84°
64°
30
83°
63°
1
83°
63°
2
82°
62°
3
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rock Hill
Rock Hill's September 2026 forecast shows daily high temperatures ranging from 77° to 97°, with overnight lows between 57° and 71°. The average high for September is 84° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Rock Hill. See also: October | November | December.
