S
M
T
W
T
F
S
27
20°
2°
28
18°
4°
29
19°
-11°
30
17°
-12°
31
12°
-12°
1
9°
-11°
2
9°
-10°
3
10°
-4°
4
10°
2°
5
14°
3°
6
17°
2°
7
21°
4°
8
23°
3°
9
25°
-2°
10
23°
1°
11
20°
3°
12
21°
-5°
13
25°
1°
14
16°
-1°
15
24°
1°
16
17°
0°
17
15°
6°
18
26°
3°
19
27°
1°
20
26°
-3°
21
16°
-3°
22
15°
3°
23
22°
-4°
24
24°
-9°
25
15°
1°
26
14°
-2°
27
16°
-17°
28
15°
-10°
29
14°
-14°
30
13°
-5°
31
12°
3°
1
26°
-11°
2
27°
-13°
3
10°
1°
4
17°
-16°
5
16°
-11°
6
7°
4°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Killarney
Killarney's January 2027 forecast shows daily high temperatures ranging from 7° to 27°, with overnight lows between -17° and 6°. The average high for January is 18° with an average low of -3°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Killarney. See also: February | March | April.
