S
M
T
W
T
F
S
26
58°
40°
27
60°
46°
28
60°
46°
29
59°
45°
30
60°
46°
1
61°
46°
2
60°
47°
3
61°
46°
4
61°
46°
5
60°
47°
6
61°
46°
7
56°
43°
8
57°
42°
9
57°
46°
10
58°
45°
11
57°
44°
12
57°
44°
13
58°
48°
14
59°
49°
15
63°
47°
16
62°
48°
17
62°
42°
18
59°
42°
19
59°
44°
20
60°
46°
21
60°
46°
22
61°
48°
23
62°
49°
24
64°
49°
25
62°
48°
26
61°
49°
27
61°
49°
28
62°
47°
29
61°
48°
30
62°
46°
31
63°
48°
1
64°
51°
2
65°
50°
3
64°
51°
4
62°
51°
5
63°
50°
6
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Killarney
Killarney's May 2026 forecast shows daily high temperatures ranging from 56° to 65°, with overnight lows between 40° and 51°. The average high for May is 61° with an average low of 47°. 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 Killarney. See also: June | July | August.
