S
M
T
W
T
F
S
31
67°
36°
1
67°
43°
2
77°
39°
3
85°
43°
4
87°
48°
5
86°
52°
6
79°
57°
7
69°
44°
8
77°
48°
9
83°
55°
10
86°
65°
11
85°
65°
12
85°
64°
13
82°
60°
14
80°
59°
15
79°
56°
16
76°
56°
17
75°
55°
18
74°
55°
19
75°
56°
20
76°
51°
21
74°
53°
22
74°
54°
23
71°
51°
24
70°
50°
25
70°
52°
26
71°
49°
27
72°
57°
28
77°
54°
29
72°
51°
30
72°
54°
1
73°
54°
2
75°
51°
3
72°
51°
4
74°
56°
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 69° to 86°, with overnight lows between 44° and 65°. The average high for June is 76° with an average low of 55°. 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.