S
M
T
W
T
F
S
29
Hist. Avg.
49°
39°
30
Hist. Avg.
49°
39°
1
Hist. Avg.
48°
38°
2
Hist. Avg.
48°
38°
3
Hist. Avg.
48°
38°
4
Hist. Avg.
48°
38°
5
Hist. Avg.
48°
38°
6
Hist. Avg.
48°
38°
7
Hist. Avg.
48°
38°
8
Hist. Avg.
48°
38°
9
Hist. Avg.
47°
38°
10
Hist. Avg.
47°
38°
11
Hist. Avg.
47°
38°
12
Hist. Avg.
47°
38°
13
Hist. Avg.
47°
38°
14
Hist. Avg.
47°
38°
15
Hist. Avg.
47°
38°
16
Hist. Avg.
47°
38°
17
Hist. Avg.
46°
37°
18
Hist. Avg.
46°
37°
19
Hist. Avg.
46°
37°
20
Hist. Avg.
46°
37°
21
Hist. Avg.
46°
37°
22
Hist. Avg.
46°
37°
23
Hist. Avg.
46°
37°
24
Hist. Avg.
46°
37°
25
Hist. Avg.
46°
37°
26
Hist. Avg.
46°
37°
27
Hist. Avg.
46°
37°
28
Hist. Avg.
46°
37°
29
Hist. Avg.
46°
37°
30
Hist. Avg.
46°
37°
31
Hist. Avg.
46°
37°
1
Hist. Avg.
46°
37°
2
Hist. Avg.
46°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Killarney
Killarney's December 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Killarney. See also: January | February | March.
