S
M
T
W
T
F
S
28
80°
64°
29
85°
63°
30
87°
64°
1
93°
69°
2
97°
72°
3
97°
70°
4
97°
70°
5
83°
69°
6
70°
63°
7
72°
62°
8
81°
62°
9
84°
68°
10
86°
68°
11
85°
65°
12
80°
62°
13
82°
63°
14
80°
59°
15
84°
62°
16
85°
66°
17
87°
62°
18
81°
62°
19
86°
66°
20
81°
60°
21
79°
59°
22
80°
60°
23
81°
60°
24
83°
62°
25
83°
63°
26
86°
64°
27
84°
66°
28
87°
66°
29
87°
65°
30
86°
66°
31
85°
67°
1
86°
65°
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 70° to 97°, with overnight lows between 59° and 70°. The average high for July is 83° with an average low of 64°. 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.