S
M
T
W
T
F
S
26
48°
23°
27
46°
28°
28
45°
25°
29
45°
28°
30
45°
27°
1
61°
27°
2
68°
37°
3
73°
32°
4
45°
34°
5
36°
27°
6
48°
27°
7
55°
19°
8
63°
39°
9
54°
30°
10
57°
27°
11
72°
36°
12
72°
41°
13
70°
39°
14
73°
55°
15
67°
44°
16
52°
33°
17
46°
34°
18
39°
34°
19
50°
30°
20
64°
32°
21
68°
45°
22
66°
46°
23
60°
43°
24
78°
54°
25
82°
49°
26
85°
54°
27
84°
57°
28
84°
57°
29
80°
56°
30
79°
55°
31
75°
52°
1
76°
53°
2
71°
52°
3
74°
53°
4
73°
49°
5
70°
46°
6
70°
50°
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 60° to 85°, with overnight lows between 43° and 57°. The average high for May is 76° with an average low of 52°. 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.
