S
M
T
W
T
F
S
28
82°
62°
29
89°
67°
30
94°
78°
1
97°
79°
2
96°
79°
3
95°
71°
4
87°
70°
5
78°
70°
6
80°
65°
7
84°
65°
8
89°
70°
9
87°
71°
10
84°
69°
11
85°
64°
12
86°
64°
13
90°
69°
14
98°
74°
15
95°
68°
16
91°
73°
17
88°
70°
18
86°
70°
19
84°
65°
20
80°
65°
21
83°
66°
22
83°
66°
23
85°
68°
24
84°
65°
25
87°
70°
26
87°
71°
27
82°
69°
28
80°
67°
29
78°
63°
30
78°
65°
31
81°
68°
1
83°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Detroit
Detroit's July 2026 forecast shows daily high temperatures ranging from 78° to 98°, with overnight lows between 63° and 74°. The average high for July is 85° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Detroit. See also: August | September | October.