S
M
T
W
T
F
S
29
50°
21°
30
69°
26°
31
64°
44°
1
57°
39°
2
39°
34°
3
50°
34°
4
64°
38°
5
49°
36°
6
45°
26°
7
41°
24°
8
50°
20°
9
58°
32°
10
69°
41°
11
50°
30°
12
56°
43°
13
66°
53°
14
73°
53°
15
68°
48°
16
64°
46°
17
63°
44°
18
61°
37°
19
57°
39°
20
61°
42°
21
62°
41°
22
59°
33°
23
50°
32°
24
52°
38°
25
53°
38°
26
52°
37°
27
51°
36°
28
53°
36°
29
52°
34°
30
55°
34°
1
55°
41°
2
64°
38°
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 73°, with overnight lows between 30° and 53°. The average high for April is 59° with an average low of 39°. 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.