S
M
T
W
T
F
S
26
85°
63°
27
86°
64°
28
85°
63°
29
86°
64°
30
86°
65°
31
85°
64°
1
83°
63°
2
79°
61°
3
79°
57°
4
78°
63°
5
78°
63°
6
79°
59°
7
79°
59°
8
81°
61°
9
83°
63°
10
84°
63°
11
84°
62°
12
83°
62°
13
83°
63°
14
86°
60°
15
86°
63°
16
79°
63°
17
81°
62°
18
83°
63°
19
85°
61°
20
79°
55°
21
80°
53°
22
77°
54°
23
78°
56°
24
78°
55°
25
79°
54°
26
78°
60°
27
78°
57°
28
80°
54°
29
77°
55°
30
76°
53°
31
76°
52°
1
75°
53°
2
76°
57°
3
75°
58°
4
76°
53°
5
77°
51°
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 75° to 86°, with overnight lows between 51° and 65°. The average high for August is 81° 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 August weather will actually feel in Derry. See also: September | October | November.
