S
M
T
W
T
F
S
26
80°
48°
27
69°
56°
28
62°
52°
29
61°
45°
30
64°
39°
1
61°
40°
2
60°
44°
3
75°
44°
4
80°
55°
5
62°
45°
6
60°
42°
7
67°
41°
8
65°
53°
9
80°
49°
10
69°
49°
11
75°
48°
12
82°
52°
13
73°
53°
14
74°
46°
15
84°
66°
16
82°
66°
17
86°
71°
18
82°
67°
19
73°
51°
20
67°
48°
21
69°
50°
22
74°
56°
23
78°
60°
24
75°
60°
25
80°
60°
26
79°
62°
27
81°
64°
28
90°
68°
29
82°
59°
30
74°
58°
31
75°
58°
1
74°
55°
2
75°
56°
3
74°
62°
4
81°
65°
5
84°
66°
6
85°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Detroit
Detroit's May 2026 forecast shows daily high temperatures ranging from 67° to 90°, with overnight lows between 48° and 71°. The average high for May is 78° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Detroit. See also: June | July | August.