S
M
T
W
T
F
S
26
81°
55°
27
85°
61°
28
79°
65°
29
74°
62°
30
78°
60°
31
82°
61°
1
81°
59°
2
80°
60°
3
82°
62°
4
82°
62°
5
85°
63°
6
83°
59°
7
81°
63°
8
77°
63°
9
78°
62°
10
79°
62°
11
77°
61°
12
77°
59°
13
78°
62°
14
77°
63°
15
80°
62°
16
80°
63°
17
77°
62°
18
78°
62°
19
78°
61°
20
79°
62°
21
80°
61°
22
76°
58°
23
75°
58°
24
79°
61°
25
82°
61°
26
82°
60°
27
78°
60°
28
74°
58°
29
74°
56°
30
75°
60°
31
78°
60°
1
81°
59°
2
81°
60°
3
78°
59°
4
74°
56°
5
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Derry
Derry's August 2026 forecast shows daily high temperatures ranging from 73° to 85°, with overnight lows between 54° and 65°. The average high for August is 79° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Derry. See also: September | October | November.
