S
M
T
W
T
F
S
26
48°
33°
27
49°
31°
28
54°
36°
29
51°
33°
30
50°
35°
1
51°
34°
2
51°
31°
3
55°
35°
4
62°
43°
5
63°
40°
6
56°
37°
7
60°
43°
8
66°
45°
9
66°
43°
10
65°
38°
11
54°
39°
12
55°
38°
13
56°
42°
14
56°
42°
15
60°
45°
16
65°
46°
17
61°
47°
18
64°
37°
19
64°
35°
20
58°
35°
21
59°
36°
22
58°
35°
23
59°
36°
24
60°
40°
25
62°
40°
26
64°
43°
27
67°
36°
28
61°
43°
29
61°
46°
30
68°
40°
31
63°
42°
1
62°
43°
2
65°
43°
3
63°
52°
4
70°
48°
5
71°
43°
6
64°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dundalk
Dundalk's May 2026 forecast shows daily high temperatures ranging from 48° to 71°, with overnight lows between 31° and 52°. The average high for May is 60° with an average low of 40°. 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 Dundalk. See also: June | July | August.
