S
M
T
W
T
F
S
31
66°
50°
1
66°
54°
2
68°
54°
3
64°
52°
4
63°
54°
5
63°
52°
6
64°
52°
7
68°
54°
8
63°
48°
9
59°
46°
10
61°
45°
11
61°
46°
12
68°
54°
13
61°
50°
14
63°
45°
15
62°
51°
16
70°
57°
17
70°
57°
18
72°
61°
19
77°
59°
20
70°
55°
21
77°
59°
22
71°
53°
23
69°
52°
24
72°
55°
25
70°
53°
26
70°
53°
27
72°
54°
28
68°
54°
29
66°
53°
30
68°
53°
1
64°
51°
2
63°
49°
3
63°
49°
4
64°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Londonderry
Londonderry's June 2026 forecast shows daily high temperatures ranging from 62° to 77°, with overnight lows between 49° and 61°. The average high for June is 69° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Londonderry. See also: July | August | September.