S
M
T
W
T
F
S
30
74°
55°
31
75°
62°
1
77°
63°
2
77°
63°
3
78°
57°
4
77°
52°
5
75°
54°
6
72°
52°
7
72°
55°
8
76°
56°
9
77°
60°
10
80°
53°
11
74°
53°
12
71°
58°
13
71°
50°
14
72°
51°
15
68°
56°
16
70°
54°
17
69°
55°
18
72°
48°
19
70°
49°
20
69°
48°
21
72°
47°
22
68°
52°
23
69°
53°
24
74°
56°
25
75°
55°
26
73°
55°
27
73°
56°
28
75°
52°
29
72°
47°
30
67°
54°
1
71°
52°
2
73°
43°
3
71°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rochester Hills
Rochester Hills's September 2026 forecast shows daily high temperatures ranging from 67° to 80°, with overnight lows between 42° and 63°. The average high for September is 73° with an average low of 53°. 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 Rochester Hills. See also: October | November | December.