S
M
T
W
T
F
S
29
51°
21°
30
71°
39°
31
55°
39°
1
72°
39°
2
42°
34°
3
62°
35°
4
60°
37°
5
49°
37°
6
49°
28°
7
45°
26°
8
49°
26°
9
63°
28°
10
75°
37°
11
59°
41°
12
57°
31°
13
72°
42°
14
85°
49°
15
76°
51°
16
73°
50°
17
68°
48°
18
62°
42°
19
49°
31°
20
49°
29°
21
52°
25°
22
47°
34°
23
65°
34°
24
59°
31°
25
56°
30°
26
65°
37°
27
69°
38°
28
64°
36°
29
54°
46°
30
52°
44°
1
56°
37°
2
50°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Londonderry
Londonderry's April 2026 forecast shows daily high temperatures ranging from 50° to 69°, with overnight lows between 36° and 46°. The average high for April is 58° 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 April weather will actually feel in Londonderry. See also: May | June | July.