S
M
T
W
T
F
S
26
68°
52°
27
70°
55°
28
70°
57°
29
73°
59°
30
70°
63°
1
68°
59°
2
66°
59°
3
68°
52°
4
72°
55°
5
70°
61°
6
70°
63°
7
77°
64°
8
70°
63°
9
72°
59°
10
72°
63°
11
72°
59°
12
75°
64°
13
70°
64°
14
66°
64°
15
79°
66°
16
70°
64°
17
66°
50°
18
70°
54°
19
71°
56°
20
72°
57°
21
72°
60°
22
74°
60°
23
74°
60°
24
75°
62°
25
74°
65°
26
73°
65°
27
74°
66°
28
76°
65°
29
75°
66°
30
74°
62°
31
73°
63°
1
74°
65°
2
74°
64°
3
75°
63°
4
74°
63°
5
74°
64°
6
75°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Palermo
Palermo's May 2026 forecast shows daily high temperatures ranging from 66° to 76°, with overnight lows between 50° and 66°. The average high for May is 73° with an average low of 62°. 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 Palermo. See also: June | July | August.