S
M
T
W
T
F
S
26
58°
35°
27
58°
36°
28
53°
41°
29
52°
35°
30
49°
35°
1
41°
34°
2
48°
35°
3
44°
33°
4
57°
37°
5
50°
40°
6
46°
31°
7
45°
34°
8
48°
36°
9
52°
37°
10
50°
36°
11
50°
34°
12
48°
37°
13
52°
38°
14
54°
39°
15
56°
43°
16
56°
39°
17
55°
42°
18
58°
40°
19
62°
36°
20
57°
40°
21
58°
39°
22
59°
40°
23
62°
42°
24
64°
44°
25
64°
47°
26
66°
45°
27
62°
45°
28
68°
46°
29
66°
47°
30
67°
46°
31
67°
49°
1
68°
48°
2
67°
49°
3
65°
50°
4
73°
51°
5
73°
51°
6
64°
48°
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 45° to 73°, with overnight lows between 31° and 51°. The average high for May is 59° with an average low of 42°. 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.
