S
M
T
W
T
F
S
26
49°
31°
27
54°
31°
28
60°
35°
29
61°
38°
30
63°
39°
1
64°
40°
2
65°
40°
3
62°
41°
4
62°
41°
5
65°
40°
6
60°
32°
7
52°
31°
8
54°
37°
9
62°
38°
10
64°
42°
11
59°
37°
12
63°
43°
13
66°
42°
14
66°
43°
15
61°
37°
16
62°
41°
17
61°
43°
18
62°
40°
19
60°
43°
20
61°
43°
21
60°
39°
22
60°
36°
23
60°
37°
24
67°
45°
25
66°
44°
26
66°
45°
27
70°
45°
28
71°
46°
29
71°
42°
30
66°
42°
31
68°
43°
1
70°
41°
2
67°
44°
3
68°
44°
4
66°
47°
5
65°
40°
6
65°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Calmar
Calmar's May 2026 forecast shows daily high temperatures ranging from 49° to 71°, with overnight lows between 31° and 47°. The average high for May is 63° with an average low of 40°. 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 Calmar. See also: June | July | August.