S
M
T
W
T
F
S
30
71°
63°
31
80°
64°
1
91°
69°
2
94°
70°
3
82°
64°
4
80°
64°
5
79°
54°
6
76°
53°
7
80°
50°
8
81°
54°
9
77°
63°
10
78°
52°
11
77°
58°
12
85°
63°
13
81°
61°
14
80°
64°
15
80°
53°
16
73°
51°
17
74°
54°
18
72°
51°
19
67°
46°
20
66°
47°
21
68°
48°
22
66°
47°
23
67°
52°
24
70°
53°
25
65°
51°
26
74°
53°
27
74°
52°
28
73°
51°
29
71°
52°
30
72°
51°
1
72°
49°
2
66°
50°
3
69°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Imlay City
Imlay City's September 2026 forecast shows daily high temperatures ranging from 65° to 85°, with overnight lows between 46° and 64°. 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 Imlay City. See also: October | November | December.