S
M
T
W
T
F
S
26
79°
58°
27
79°
60°
28
84°
63°
29
85°
64°
30
86°
63°
31
85°
59°
1
83°
63°
2
83°
62°
3
80°
59°
4
83°
63°
5
84°
64°
6
85°
62°
7
86°
57°
8
82°
55°
9
79°
56°
10
78°
60°
11
78°
56°
12
77°
55°
13
77°
55°
14
78°
56°
15
78°
55°
16
77°
56°
17
76°
55°
18
77°
60°
19
83°
56°
20
79°
58°
21
77°
61°
22
83°
56°
23
Hist. Avg.
82°
61°
24
Hist. Avg.
82°
61°
25
Hist. Avg.
81°
61°
26
Hist. Avg.
81°
61°
27
Hist. Avg.
81°
60°
28
Hist. Avg.
81°
60°
29
Hist. Avg.
80°
60°
30
Hist. Avg.
80°
60°
31
Hist. Avg.
80°
59°
1
Hist. Avg.
80°
59°
2
Hist. Avg.
79°
59°
3
Hist. Avg.
79°
59°
4
Hist. Avg.
79°
58°
5
Hist. Avg.
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Derry
Derry's August 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 55° and 64°. 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.
