S
M
T
W
T
F
S
30
77°
65°
31
84°
71°
1
87°
72°
2
94°
70°
3
94°
68°
4
79°
67°
5
76°
64°
6
77°
52°
7
77°
55°
8
83°
55°
9
82°
65°
10
81°
57°
11
77°
51°
12
81°
60°
13
83°
54°
14
71°
44°
15
87°
57°
16
72°
66°
17
74°
64°
18
75°
58°
19
67°
58°
20
64°
57°
21
63°
54°
22
N/A
23
65°
57°
24
N/A
25
67°
49°
26
73°
47°
27
73°
50°
28
72°
51°
29
73°
59°
30
72°
60°
1
75°
56°
2
73°
58°
3
70°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Ottawa Hills
Ottawa Hills's September 2026 forecast shows daily high temperatures ranging from 67° to 75°, with overnight lows between 47° and 60°. The average high for September is 72° 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 Ottawa Hills. See also: October | November | December.
