S
M
T
W
T
F
S
28
82°
60°
29
83°
53°
30
79°
54°
1
80°
59°
2
85°
63°
3
83°
63°
4
86°
64°
5
87°
63°
6
87°
56°
7
81°
57°
8
84°
59°
9
84°
63°
10
86°
59°
11
86°
64°
12
86°
63°
13
88°
56°
14
80°
56°
15
84°
59°
16
86°
56°
17
82°
61°
18
86°
63°
19
87°
59°
20
86°
64°
21
87°
63°
22
86°
64°
23
83°
64°
24
83°
63°
25
81°
64°
26
81°
64°
27
82°
63°
28
85°
63°
29
84°
64°
30
88°
64°
31
87°
63°
1
86°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Derry
Derry's July 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 53° and 64°. The average high for July is 84° with an average low of 61°. 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 Derry. See also: August | September | October.
