S
M
T
W
T
F
S
26
95°
72°
27
95°
75°
28
96°
73°
29
95°
73°
30
96°
75°
31
96°
75°
1
93°
78°
2
96°
75°
3
N/A
4
97°
74°
5
97°
74°
6
94°
76°
7
93°
74°
8
94°
75°
9
93°
74°
10
92°
75°
11
94°
74°
12
97°
76°
13
96°
76°
14
97°
77°
15
95°
77°
16
96°
75°
17
97°
76°
18
92°
76°
19
96°
77°
20
96°
76°
21
97°
77°
22
96°
77°
23
96°
76°
24
95°
77°
25
96°
77°
26
96°
76°
27
95°
77°
28
96°
76°
29
95°
76°
30
96°
77°
31
96°
76°
1
95°
75°
2
94°
76°
3
95°
76°
4
96°
75°
5
93°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Londonderry
Londonderry's August 2026 forecast shows daily high temperatures ranging from 92° to 97°, with overnight lows between 74° and 77°. The average high for August is 95° with an average low of 76°. 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 Londonderry. See also: September | October | November.
