S
M
T
W
T
F
S
28
86°
60°
29
85°
63°
30
87°
63°
1
88°
66°
2
87°
63°
3
89°
64°
4
89°
68°
5
93°
68°
6
92°
67°
7
88°
68°
8
92°
68°
9
87°
67°
10
87°
68°
11
86°
69°
12
86°
69°
13
90°
68°
14
92°
68°
15
91°
67°
16
92°
67°
17
88°
65°
18
88°
66°
19
91°
64°
20
92°
63°
21
89°
69°
22
93°
66°
23
89°
67°
24
92°
70°
25
92°
69°
26
91°
69°
27
93°
68°
28
Hist. Avg.
89°
67°
29
Hist. Avg.
89°
67°
30
Hist. Avg.
89°
67°
31
Hist. Avg.
89°
66°
1
Hist. Avg.
89°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Belfast
Belfast's July 2026 forecast shows daily high temperatures ranging from 85° to 93°, with overnight lows between 60° and 70°. The average high for July is 90° with an average low of 67°. 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.