S
M
T
W
T
F
S
26
61°
45°
27
72°
39°
28
68°
52°
29
64°
50°
30
50°
37°
1
57°
34°
2
49°
30°
3
57°
46°
4
69°
57°
5
74°
59°
6
63°
55°
7
55°
38°
8
53°
44°
9
60°
47°
10
66°
49°
11
62°
47°
12
60°
47°
13
65°
50°
14
69°
53°
15
68°
49°
16
74°
52°
17
75°
53°
18
74°
52°
19
72°
51°
20
75°
52°
21
73°
50°
22
72°
44°
23
64°
44°
24
66°
45°
25
66°
47°
26
67°
46°
27
67°
46°
28
68°
47°
29
69°
46°
30
68°
47°
31
73°
56°
1
70°
54°
2
71°
50°
3
71°
51°
4
73°
55°
5
75°
53°
6
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Calumet
Calumet's May 2026 forecast shows daily high temperatures ranging from 49° to 79°, with overnight lows between 30° and 59°. The average high for May is 68° with an average low of 49°. 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 Calumet. See also: June | July | August.