S
M
T
W
T
F
S
28
63°
52°
29
66°
54°
30
64°
54°
1
64°
53°
2
65°
53°
3
64°
52°
4
65°
52°
5
64°
54°
6
64°
54°
7
66°
55°
8
66°
56°
9
68°
56°
10
67°
55°
11
65°
56°
12
65°
56°
13
66°
55°
14
65°
56°
15
66°
56°
16
66°
55°
17
67°
56°
18
66°
56°
19
66°
55°
20
69°
53°
21
68°
52°
22
69°
55°
23
70°
55°
24
70°
54°
25
69°
53°
26
70°
56°
27
70°
56°
28
69°
57°
29
71°
56°
30
71°
56°
31
69°
55°
1
70°
54°
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 63° to 71°, with overnight lows between 52° and 57°. The average high for July is 67° with an average low of 55°. 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.