S
M
T
W
T
F
S
30
84°
66°
31
84°
64°
1
84°
59°
2
84°
64°
3
88°
68°
4
84°
64°
5
84°
63°
6
75°
66°
7
81°
64°
8
84°
64°
9
75°
57°
10
79°
54°
11
84°
63°
12
70°
55°
13
70°
48°
14
61°
46°
15
70°
50°
16
72°
46°
17
72°
55°
18
61°
57°
19
59°
55°
20
61°
52°
21
55°
48°
22
64°
45°
23
70°
43°
24
59°
55°
25
67°
59°
26
61°
56°
27
68°
54°
28
68°
59°
29
67°
54°
30
69°
48°
1
69°
47°
2
66°
49°
3
60°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grove City
Grove City's September 2026 forecast shows daily high temperatures ranging from 60° to 69°, with overnight lows between 43° and 59°. The average high for September is 66° with an average low of 52°. 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 Grove City. See also: October | November | December.
