S
M
T
W
T
F
S
26
65°
37°
27
70°
36°
28
64°
38°
29
60°
45°
30
52°
45°
1
64°
43°
2
58°
44°
3
56°
38°
4
69°
48°
5
78°
58°
6
66°
49°
7
62°
45°
8
58°
38°
9
57°
42°
10
57°
39°
11
61°
42°
12
61°
44°
13
63°
46°
14
62°
48°
15
63°
46°
16
65°
44°
17
70°
48°
18
71°
50°
19
71°
49°
20
67°
49°
21
67°
50°
22
68°
50°
23
65°
47°
24
63°
46°
25
65°
46°
26
65°
51°
27
66°
49°
28
66°
47°
29
65°
45°
30
66°
49°
31
67°
53°
1
69°
50°
2
68°
48°
3
68°
54°
4
73°
54°
5
69°
53°
6
69°
55°
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 56° to 78°, with overnight lows between 38° and 58°. The average high for May is 66° 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.
