S
M
T
W
T
F
S
26
84°
68°
27
93°
73°
28
90°
72°
29
75°
57°
30
66°
55°
1
59°
46°
2
72°
45°
3
75°
50°
4
84°
57°
5
90°
64°
6
64°
52°
7
59°
54°
8
77°
55°
9
86°
61°
10
90°
63°
11
77°
59°
12
82°
55°
13
88°
59°
14
90°
64°
15
84°
68°
16
84°
64°
17
82°
72°
18
88°
75°
19
91°
59°
20
77°
57°
21
70°
63°
22
86°
61°
23
82°
61°
24
86°
63°
25
79°
63°
26
81°
61°
27
86°
62°
28
91°
64°
29
90°
71°
30
88°
67°
31
94°
69°
1
90°
62°
2
88°
61°
3
85°
59°
4
86°
60°
5
88°
62°
6
91°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Callan
Callan's May 2026 forecast shows daily high temperatures ranging from 85° to 94°, with overnight lows between 59° and 71°. The average high for May is 89° with an average low of 64°. 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 Callan. See also: June | July | August.