S
M
T
W
T
F
S
28
85°
61°
29
87°
61°
30
89°
58°
1
95°
69°
2
97°
73°
3
97°
72°
4
91°
74°
5
86°
60°
6
78°
64°
7
72°
64°
8
84°
61°
9
91°
69°
10
86°
65°
11
83°
58°
12
85°
57°
13
88°
62°
14
91°
69°
15
92°
62°
16
84°
61°
17
85°
61°
18
82°
60°
19
84°
61°
20
83°
59°
21
84°
63°
22
82°
60°
23
78°
59°
24
78°
60°
25
78°
59°
26
79°
63°
27
83°
64°
28
78°
64°
29
79°
63°
30
82°
64°
31
82°
64°
1
81°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Londonderry
Londonderry's July 2026 forecast shows daily high temperatures ranging from 78° to 92°, with overnight lows between 57° and 69°. The average high for July is 83° with an average low of 62°. 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 Londonderry. See also: August | September | October.
