S
M
T
W
T
F
S
31
83°
61°
1
85°
62°
2
85°
63°
3
84°
63°
4
83°
62°
5
81°
63°
6
83°
62°
7
78°
63°
8
88°
61°
9
83°
63°
10
89°
62°
11
90°
63°
12
86°
64°
13
85°
65°
14
88°
59°
15
83°
58°
16
84°
59°
17
84°
62°
18
85°
60°
19
85°
62°
20
90°
60°
21
85°
60°
22
88°
61°
23
88°
60°
24
89°
60°
25
86°
61°
26
86°
60°
27
85°
61°
28
86°
60°
29
85°
63°
30
87°
63°
1
88°
66°
2
87°
63°
3
89°
64°
4
89°
68°
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 78° to 90°, with overnight lows between 58° and 68°. The average high for June is 86° with an average low of 62°. 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.
