S
M
T
W
T
F
S
30
70°
50°
31
71°
55°
1
74°
57°
2
70°
59°
3
78°
59°
4
79°
57°
5
79°
54°
6
73°
48°
7
68°
48°
8
72°
55°
9
75°
48°
10
73°
53°
11
71°
49°
12
72°
54°
13
72°
54°
14
76°
52°
15
68°
51°
16
66°
52°
17
65°
53°
18
66°
49°
19
72°
44°
20
66°
50°
21
70°
43°
22
67°
43°
23
66°
42°
24
68°
42°
25
68°
50°
26
71°
46°
27
65°
51°
28
67°
47°
29
70°
40°
30
62°
46°
1
67°
47°
2
70°
44°
3
66°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grove Township
Grove Township's September 2026 forecast shows daily high temperatures ranging from 62° to 79°, with overnight lows between 40° and 59°. The average high for September is 70° with an average low of 50°. 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 Township. See also: October | November | December.