S
M
T
W
T
F
S
30
90°
72°
31
94°
70°
1
96°
71°
2
97°
73°
3
97°
73°
4
96°
72°
5
100°
72°
6
97°
69°
7
89°
69°
8
91°
66°
9
92°
66°
10
94°
72°
11
99°
72°
12
90°
72°
13
94°
75°
14
95°
70°
15
88°
73°
16
88°
66°
17
91°
62°
18
93°
66°
19
92°
71°
20
88°
71°
21
91°
69°
22
88°
70°
23
76°
64°
24
68°
60°
25
77°
48°
26
81°
52°
27
82°
54°
28
83°
55°
29
87°
62°
30
86°
64°
1
87°
66°
2
83°
65°
3
82°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Graniteville
Graniteville's September 2026 forecast shows daily high temperatures ranging from 77° to 87°, with overnight lows between 48° and 67°. The average high for September is 83° with an average low of 59°. 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 Graniteville. See also: October | November | December.
