S
M
T
W
T
F
S
28
80°
59°
29
77°
56°
30
68°
53°
1
66°
51°
2
70°
55°
3
73°
55°
4
71°
56°
5
67°
51°
6
66°
53°
7
67°
52°
8
71°
54°
9
70°
55°
10
69°
53°
11
73°
54°
12
77°
58°
13
79°
58°
14
78°
57°
15
78°
58°
16
79°
58°
17
80°
59°
18
81°
60°
19
80°
59°
20
80°
59°
21
79°
58°
22
80°
58°
23
79°
57°
24
80°
59°
25
81°
59°
26
81°
58°
27
79°
53°
28
80°
57°
29
80°
57°
30
81°
51°
31
77°
50°
1
76°
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 66° to 81°, with overnight lows between 50° and 60°. The average high for July is 76° with an average low of 56°. 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.