S
M
T
W
T
F
S
30
91°
73°
31
93°
74°
1
96°
75°
2
97°
76°
3
98°
77°
4
96°
75°
5
99°
74°
6
97°
70°
7
97°
70°
8
90°
71°
9
91°
71°
10
92°
75°
11
93°
74°
12
89°
73°
13
93°
75°
14
96°
73°
15
87°
76°
16
88°
73°
17
91°
67°
18
93°
70°
19
94°
73°
20
88°
73°
21
90°
73°
22
87°
73°
23
74°
66°
24
68°
57°
25
78°
53°
26
83°
54°
27
84°
58°
28
86°
55°
29
86°
64°
30
86°
68°
1
86°
68°
2
85°
70°
3
87°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grovetown
Grovetown's September 2026 forecast shows daily high temperatures ranging from 68° to 87°, with overnight lows between 53° and 70°. The average high for September is 83° with an average low of 62°. 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 Grovetown. See also: October | November | December.