S
M
T
W
T
F
S
26
77°
58°
27
80°
55°
28
86°
52°
29
89°
54°
30
92°
59°
1
96°
60°
2
97°
70°
3
96°
64°
4
77°
58°
5
77°
57°
6
86°
61°
7
95°
66°
8
104°
67°
9
104°
68°
10
105°
67°
11
105°
69°
12
98°
69°
13
101°
68°
14
99°
68°
15
94°
63°
16
95°
66°
17
97°
67°
18
98°
68°
19
98°
68°
20
99°
67°
21
99°
69°
22
98°
69°
23
100°
68°
24
99°
69°
25
99°
69°
26
98°
68°
27
98°
68°
28
93°
65°
29
91°
62°
30
91°
64°
31
92°
65°
1
93°
68°
2
95°
67°
3
95°
69°
4
97°
70°
5
99°
71°
6
99°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Calexico
Calexico's May 2026 forecast shows daily high temperatures ranging from 77° to 105°, with overnight lows between 57° and 71°. The average high for May is 96° with an average low of 67°. 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 Calexico. See also: June | July | August.