S
M
T
W
T
F
S
26
66°
35°
27
71°
38°
28
67°
44°
29
56°
44°
30
45°
37°
1
50°
31°
2
46°
34°
3
55°
36°
4
64°
41°
5
63°
41°
6
52°
36°
7
54°
39°
8
53°
38°
9
57°
42°
10
55°
40°
11
55°
40°
12
56°
38°
13
57°
44°
14
61°
44°
15
60°
43°
16
58°
45°
17
62°
41°
18
61°
44°
19
65°
44°
20
67°
50°
21
69°
49°
22
68°
50°
23
61°
42°
24
60°
42°
25
60°
43°
26
62°
45°
27
62°
43°
28
63°
43°
29
63°
44°
30
65°
46°
31
64°
51°
1
66°
47°
2
65°
45°
3
69°
51°
4
68°
49°
5
68°
54°
6
75°
55°
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 52° to 75°, with overnight lows between 36° and 55°. The average high for May is 62° with an average low of 44°. 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.