S
M
T
W
T
F
S
26
62°
41°
27
72°
37°
28
62°
51°
29
57°
44°
30
49°
36°
1
42°
32°
2
43°
33°
3
58°
31°
4
71°
45°
5
70°
50°
6
53°
41°
7
56°
34°
8
60°
39°
9
65°
47°
10
59°
40°
11
58°
33°
12
65°
30°
13
68°
42°
14
48°
41°
15
64°
39°
16
70°
47°
17
83°
59°
18
86°
62°
19
83°
64°
20
66°
48°
21
67°
45°
22
N/A
23
51°
48°
24
72°
60°
25
77°
56°
26
77°
60°
27
78°
54°
28
80°
48°
29
72°
48°
30
70°
50°
31
70°
49°
1
77°
54°
2
76°
56°
3
75°
55°
4
76°
49°
5
77°
54°
6
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Sligo
Sligo's May 2026 forecast shows daily high temperatures ranging from 51° to 80°, with overnight lows between 48° and 60°. The average high for May is 74° with an average low of 53°. 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 Sligo. See also: June | July | August.