S
M
T
W
T
F
S
31
68°
38°
1
66°
42°
2
69°
41°
3
74°
44°
4
78°
47°
5
81°
52°
6
75°
61°
7
72°
55°
8
79°
51°
9
81°
59°
10
82°
69°
11
84°
69°
12
84°
59°
13
81°
60°
14
77°
47°
15
72°
49°
16
71°
47°
17
69°
49°
18
70°
54°
19
74°
53°
20
74°
53°
21
72°
51°
22
74°
53°
23
73°
52°
24
73°
52°
25
72°
53°
26
73°
49°
27
72°
49°
28
72°
50°
29
73°
50°
30
75°
55°
1
79°
58°
2
79°
58°
3
75°
57°
4
76°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Belfast
Belfast's June 2026 forecast shows daily high temperatures ranging from 69° to 84°, with overnight lows between 47° and 69°. The average high for June is 75° 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 Belfast. See also: July | August | September.
