S
M
T
W
T
F
S
30
80°
62°
31
81°
62°
1
80°
61°
2
76°
59°
3
77°
60°
4
78°
60°
5
80°
59°
6
80°
60°
7
81°
61°
8
81°
61°
9
79°
60°
10
74°
59°
11
78°
60°
12
79°
59°
13
79°
57°
14
69°
48°
15
68°
48°
16
69°
52°
17
72°
53°
18
67°
47°
19
70°
52°
20
75°
55°
21
76°
55°
22
75°
51°
23
75°
44°
24
68°
46°
25
71°
51°
26
73°
54°
27
69°
49°
28
71°
42°
29
64°
44°
30
67°
47°
1
65°
51°
2
66°
52°
3
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Thornapple Township
Thornapple Township's September 2026 forecast shows daily high temperatures ranging from 64° to 81°, with overnight lows between 42° and 62°. The average high for September is 74° with an average low of 54°. 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 Thornapple Township. See also: October | November | December.
