S
M
T
W
T
F
S
26
78°
56°
27
82°
59°
28
78°
56°
29
78°
58°
30
82°
60°
31
83°
59°
1
82°
51°
2
79°
51°
3
76°
53°
4
77°
53°
5
75°
52°
6
76°
53°
7
77°
52°
8
78°
55°
9
79°
58°
10
80°
58°
11
79°
59°
12
81°
58°
13
79°
58°
14
82°
56°
15
82°
51°
16
77°
56°
17
80°
50°
18
76°
49°
19
75°
48°
20
74°
50°
21
75°
53°
22
76°
52°
23
73°
51°
24
77°
56°
25
74°
53°
26
80°
57°
27
80°
56°
28
79°
56°
29
79°
55°
30
75°
51°
31
73°
48°
1
72°
47°
2
72°
47°
3
73°
53°
4
72°
49°
5
73°
46°
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 72° to 83°, with overnight lows between 46° and 60°. The average high for August is 77° with an average low of 54°. 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.