S
M
T
W
T
F
S
26
90°
61°
27
82°
63°
28
90°
57°
29
91°
68°
30
90°
70°
1
86°
66°
2
68°
55°
3
77°
50°
4
84°
48°
5
86°
57°
6
88°
66°
7
86°
67°
8
88°
67°
9
79°
69°
10
82°
67°
11
86°
57°
12
84°
56°
13
89°
62°
14
90°
64°
15
91°
65°
16
91°
65°
17
89°
66°
18
90°
66°
19
89°
63°
20
86°
66°
21
89°
65°
22
89°
67°
23
90°
67°
24
86°
66°
25
86°
67°
26
87°
67°
27
86°
66°
28
86°
67°
29
87°
68°
30
83°
68°
31
85°
69°
1
86°
69°
2
87°
68°
3
88°
68°
4
89°
69°
5
88°
70°
6
87°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mayo
Mayo's May 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 56° and 70°. The average high for May is 87° with an average low of 66°. 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 Mayo. See also: June | July | August.