S
M
T
W
T
F
S
26
89°
62°
27
73°
64°
28
85°
62°
29
95°
65°
30
91°
69°
1
87°
67°
2
70°
58°
3
75°
52°
4
80°
49°
5
83°
54°
6
95°
59°
7
89°
66°
8
83°
68°
9
81°
67°
10
84°
69°
11
93°
68°
12
77°
70°
13
83°
68°
14
90°
61°
15
80°
54°
16
88°
63°
17
90°
75°
18
88°
67°
19
87°
67°
20
87°
70°
21
89°
70°
22
90°
70°
23
88°
72°
24
89°
72°
25
87°
71°
26
89°
70°
27
89°
70°
28
88°
69°
29
89°
69°
30
83°
70°
31
84°
73°
1
88°
71°
2
89°
71°
3
89°
72°
4
86°
71°
5
87°
72°
6
87°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Callahan
Callahan's May 2026 forecast shows daily high temperatures ranging from 83° to 90°, with overnight lows between 67° and 73°. The average high for May is 88° with an average low of 70°. 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 Callahan. See also: June | July | August.
