S
M
T
W
T
F
S
26
61°
45°
27
72°
39°
28
68°
52°
29
64°
50°
30
50°
37°
1
57°
34°
2
47°
30°
3
57°
44°
4
70°
56°
5
73°
57°
6
61°
53°
7
57°
35°
8
54°
38°
9
57°
44°
10
63°
46°
11
60°
45°
12
61°
45°
13
64°
49°
14
67°
50°
15
68°
46°
16
74°
51°
17
75°
52°
18
75°
52°
19
72°
50°
20
76°
52°
21
74°
50°
22
72°
44°
23
65°
44°
24
66°
45°
25
67°
47°
26
68°
45°
27
67°
45°
28
68°
46°
29
69°
45°
30
69°
47°
31
74°
56°
1
71°
53°
2
72°
50°
3
72°
51°
4
74°
54°
5
75°
53°
6
79°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Derry
Derry's May 2026 forecast shows daily high temperatures ranging from 47° to 79°, with overnight lows between 30° and 57°. The average high for May is 68° with an average low of 48°. 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 Derry. See also: June | July | August.
