S
M
T
W
T
F
S
28
79°
64°
29
77°
59°
30
75°
64°
1
79°
64°
2
77°
63°
3
81°
59°
4
84°
63°
5
82°
64°
6
90°
66°
7
88°
68°
8
91°
70°
9
93°
70°
10
86°
63°
11
84°
61°
12
83°
60°
13
81°
63°
14
84°
64°
15
87°
66°
16
85°
65°
17
79°
64°
18
78°
62°
19
79°
61°
20
77°
61°
21
79°
60°
22
76°
56°
23
74°
54°
24
72°
54°
25
71°
56°
26
71°
57°
27
72°
56°
28
75°
54°
29
73°
52°
30
76°
54°
31
75°
56°
1
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Custom House
Custom House's July 2026 forecast shows daily high temperatures ranging from 71° to 93°, with overnight lows between 52° and 70°. The average high for July is 79° with an average low of 59°. 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 Custom House. See also: August | September | October.
