S
M
T
W
T
F
S
30
82°
57°
31
82°
58°
1
81°
55°
2
79°
54°
3
79°
54°
4
78°
55°
5
75°
50°
6
73°
56°
7
77°
57°
8
80°
58°
9
81°
57°
10
72°
49°
11
70°
53°
12
77°
55°
13
78°
57°
14
80°
57°
15
79°
55°
16
75°
50°
17
70°
51°
18
75°
54°
19
69°
51°
20
71°
49°
21
Hist. Avg.
76°
50°
22
Hist. Avg.
76°
49°
23
Hist. Avg.
75°
49°
24
Hist. Avg.
75°
49°
25
Hist. Avg.
74°
49°
26
Hist. Avg.
74°
48°
27
Hist. Avg.
74°
48°
28
Hist. Avg.
73°
48°
29
Hist. Avg.
73°
48°
30
Hist. Avg.
72°
47°
1
Hist. Avg.
72°
47°
2
Hist. Avg.
71°
47°
3
Hist. Avg.
71°
47°
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 49° and 58°. The average high for September is 77° 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 Detroit. See also: October | November | December.
