S
M
T
W
T
F
S
28
79°
58°
29
75°
56°
30
74°
55°
1
75°
55°
2
76°
58°
3
79°
62°
4
78°
62°
5
76°
61°
6
77°
61°
7
81°
62°
8
82°
62°
9
82°
61°
10
81°
62°
11
81°
62°
12
82°
63°
13
82°
62°
14
79°
60°
15
78°
62°
16
77°
62°
17
77°
61°
18
78°
62°
19
77°
62°
20
77°
61°
21
76°
62°
22
76°
61°
23
77°
62°
24
77°
61°
25
78°
61°
26
78°
62°
27
78°
57°
28
78°
56°
29
79°
57°
30
82°
61°
31
83°
62°
1
82°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Belfast
Belfast's July 2026 forecast shows daily high temperatures ranging from 74° to 83°, with overnight lows between 55° and 63°. The average high for July is 78° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Belfast. See also: August | September | October.