S
M
T
W
T
F
S
26
84°
63°
27
91°
64°
28
73°
55°
29
69°
50°
30
70°
50°
1
70°
49°
2
75°
47°
3
85°
54°
4
82°
70°
5
81°
49°
6
66°
44°
7
70°
48°
8
84°
58°
9
91°
66°
10
85°
54°
11
82°
55°
12
90°
66°
13
92°
65°
14
89°
63°
15
86°
64°
16
86°
66°
17
80°
58°
18
77°
63°
19
80°
63°
20
77°
61°
21
83°
56°
22
75°
55°
23
76°
58°
24
74°
58°
25
75°
56°
26
75°
56°
27
77°
57°
28
77°
60°
29
78°
63°
30
78°
66°
31
79°
64°
1
79°
61°
2
80°
63°
3
82°
67°
4
83°
67°
5
80°
66°
6
80°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Macomb
Macomb's May 2026 forecast shows daily high temperatures ranging from 66° to 92°, with overnight lows between 44° and 70°. The average high for May is 80° 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 May weather will actually feel in Macomb. See also: June | July | August.