S
M
T
W
T
F
S
26
65°
29°
27
71°
31°
28
62°
32°
29
55°
42°
30
47°
42°
1
60°
34°
2
45°
32°
3
53°
31°
4
68°
27°
5
79°
49°
6
62°
51°
7
61°
44°
8
55°
32°
9
58°
27°
10
65°
44°
11
60°
40°
12
57°
29°
13
50°
31°
14
63°
45°
15
60°
49°
16
77°
46°
17
82°
53°
18
68°
47°
19
91°
47°
20
88°
64°
21
65°
48°
22
70°
38°
23
67°
37°
24
56°
44°
25
74°
48°
26
82°
60°
27
80°
50°
28
63°
44°
29
59°
45°
30
55°
39°
31
64°
44°
1
63°
44°
2
65°
45°
3
68°
50°
4
73°
53°
5
76°
57°
6
73°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mexico
Mexico's May 2026 forecast shows daily high temperatures ranging from 55° to 82°, with overnight lows between 39° and 60°. The average high for May is 68° with an average low of 49°. 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 Mexico. See also: June | July | August.