S
M
T
W
T
F
S
26
90°
70°
27
91°
70°
28
92°
71°
29
92°
71°
30
91°
70°
31
90°
71°
1
91°
71°
2
92°
72°
3
93°
71°
4
92°
70°
5
92°
70°
6
91°
72°
7
92°
70°
8
90°
68°
9
88°
68°
10
88°
69°
11
92°
71°
12
93°
72°
13
93°
71°
14
92°
70°
15
91°
69°
16
90°
65°
17
89°
66°
18
87°
66°
19
90°
65°
20
89°
66°
21
90°
67°
22
89°
64°
23
84°
60°
24
81°
59°
25
81°
58°
26
82°
58°
27
82°
57°
28
83°
57°
29
82°
59°
30
83°
65°
31
88°
64°
1
88°
64°
2
89°
63°
3
89°
60°
4
87°
62°
5
82°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Detroit
Detroit's August 2026 forecast shows daily high temperatures ranging from 81° to 93°, with overnight lows between 57° and 72°. The average high for August is 89° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Detroit. See also: September | October | November.