S
M
T
W
T
F
S
26
91°
73°
27
89°
72°
28
87°
69°
29
86°
65°
30
79°
67°
31
73°
62°
1
81°
62°
2
82°
58°
3
83°
62°
4
71°
60°
5
74°
53°
6
77°
50°
7
77°
54°
8
78°
52°
9
84°
65°
10
82°
67°
11
83°
70°
12
83°
69°
13
77°
66°
14
78°
64°
15
80°
70°
16
77°
59°
17
81°
56°
18
82°
61°
19
77°
57°
20
82°
61°
21
86°
57°
22
81°
54°
23
75°
57°
24
78°
58°
25
85°
59°
26
81°
56°
27
80°
55°
28
83°
58°
29
79°
59°
30
78°
58°
31
79°
59°
1
78°
54°
2
71°
54°
3
70°
50°
4
73°
58°
5
72°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Wallingford
Wallingford's August 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 50° and 61°. The average high for August is 78° with an average low of 57°. 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 Wallingford. See also: September | October | November.