S
M
T
W
T
F
S
26
77°
53°
27
78°
52°
28
76°
51°
29
77°
49°
30
71°
49°
1
70°
53°
2
71°
49°
3
70°
45°
4
71°
47°
5
75°
50°
6
79°
53°
7
80°
54°
8
80°
55°
9
79°
54°
10
81°
56°
11
81°
56°
12
80°
57°
13
81°
57°
14
80°
56°
15
73°
51°
16
75°
54°
17
79°
57°
18
78°
58°
19
81°
52°
20
76°
52°
21
75°
51°
22
76°
53°
23
78°
59°
24
76°
59°
25
79°
58°
26
83°
59°
27
85°
57°
28
85°
59°
29
84°
63°
30
86°
61°
31
86°
55°
1
85°
56°
2
86°
60°
3
86°
60°
4
87°
63°
5
83°
60°
6
83°
56°
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 70° to 87°, with overnight lows between 45° and 63°. The average high for May is 79° with an average low of 55°. 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.