S
M
T
W
T
F
S
26
93°
76°
27
90°
78°
28
96°
78°
29
100°
76°
30
85°
75°
1
76°
62°
2
79°
57°
3
85°
58°
4
86°
65°
5
101°
72°
6
95°
79°
7
83°
71°
8
90°
69°
9
92°
70°
10
97°
73°
11
87°
66°
12
90°
67°
13
94°
68°
14
96°
69°
15
97°
71°
16
94°
75°
17
98°
77°
18
94°
69°
19
93°
70°
20
89°
67°
21
81°
67°
22
93°
72°
23
86°
73°
24
93°
73°
25
93°
71°
26
91°
73°
27
86°
70°
28
94°
72°
29
95°
75°
30
95°
72°
31
95°
74°
1
95°
71°
2
97°
71°
3
90°
68°
4
91°
69°
5
95°
70°
6
96°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Callaghan
Callaghan's May 2026 forecast shows daily high temperatures ranging from 86° to 97°, with overnight lows between 68° and 75°. The average high for May is 94° with an average low of 71°. 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 Callaghan. See also: June | July | August.