S
M
T
W
T
F
S
28
79°
54°
29
82°
59°
30
79°
60°
1
78°
56°
2
77°
59°
3
78°
54°
4
76°
53°
5
75°
52°
6
74°
51°
7
75°
53°
8
77°
56°
9
78°
58°
10
75°
56°
11
76°
58°
12
76°
59°
13
77°
58°
14
76°
58°
15
76°
57°
16
77°
58°
17
76°
57°
18
75°
58°
19
76°
57°
20
77°
58°
21
78°
57°
22
76°
57°
23
76°
56°
24
77°
58°
25
77°
58°
26
80°
59°
27
82°
59°
28
79°
58°
29
76°
58°
30
78°
59°
31
82°
60°
1
82°
59°
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 82°, with overnight lows between 51° and 60°. The average high for July is 77° with an average low of 57°. 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.