S
M
T
W
T
F
S
26
55°
39°
27
56°
37°
28
55°
38°
29
55°
42°
30
56°
41°
1
57°
43°
2
58°
42°
3
57°
38°
4
57°
37°
5
58°
36°
6
59°
37°
7
61°
42°
8
62°
45°
9
63°
46°
10
64°
43°
11
60°
39°
12
60°
40°
13
59°
40°
14
60°
42°
15
61°
42°
16
62°
43°
17
62°
42°
18
63°
47°
19
63°
43°
20
64°
43°
21
65°
48°
22
68°
49°
23
67°
50°
24
67°
52°
25
73°
51°
26
68°
50°
27
66°
52°
28
74°
54°
29
76°
48°
30
69°
47°
31
67°
49°
1
66°
47°
2
71°
49°
3
73°
54°
4
77°
55°
5
78°
55°
6
77°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in East Derry
East Derry's May 2026 forecast shows daily high temperatures ranging from 55° to 78°, with overnight lows between 36° and 55°. The average high for May is 64° with an average low of 45°. 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 East Derry. See also: June | July | August.