S
M
T
W
T
F
S
26
71°
55°
27
67°
52°
28
69°
51°
29
66°
51°
30
67°
52°
1
67°
51°
2
68°
50°
3
67°
50°
4
67°
49°
5
66°
49°
6
68°
50°
7
69°
55°
8
78°
55°
9
72°
57°
10
69°
52°
11
70°
51°
12
67°
50°
13
67°
52°
14
68°
51°
15
69°
52°
16
70°
53°
17
70°
57°
18
77°
56°
19
72°
53°
20
71°
54°
21
72°
60°
22
72°
61°
23
73°
63°
24
81°
64°
25
82°
64°
26
81°
63°
27
82°
65°
28
83°
65°
29
84°
63°
30
84°
64°
31
83°
61°
1
76°
58°
2
75°
62°
3
77°
65°
4
78°
66°
5
77°
66°
6
81°
65°
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 66° to 84°, with overnight lows between 49° and 66°. The average high for May is 73° with an average low of 57°. 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.