S
M
T
W
T
F
S
30
82°
61°
31
75°
58°
1
75°
59°
2
76°
64°
3
81°
56°
4
79°
57°
5
75°
62°
6
74°
63°
7
82°
64°
8
81°
63°
9
80°
62°
10
81°
61°
11
74°
62°
12
73°
62°
13
81°
60°
14
69°
51°
15
69°
51°
16
Hist. Avg.
74°
56°
17
Hist. Avg.
74°
55°
18
Hist. Avg.
74°
55°
19
Hist. Avg.
73°
55°
20
Hist. Avg.
73°
54°
21
Hist. Avg.
72°
54°
22
Hist. Avg.
72°
54°
23
Hist. Avg.
72°
53°
24
Hist. Avg.
71°
53°
25
Hist. Avg.
71°
52°
26
Hist. Avg.
70°
52°
27
Hist. Avg.
70°
52°
28
Hist. Avg.
70°
51°
29
Hist. Avg.
69°
51°
30
Hist. Avg.
69°
50°
1
Hist. Avg.
68°
50°
2
Hist. Avg.
68°
50°
3
Hist. Avg.
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Detroit
Detroit's September 2026 forecast shows daily high temperatures ranging from 69° to 82°, with overnight lows between 51° and 64°. The average high for September is 77° with an average low of 60°. 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 Detroit. See also: October | November | December.
