S
M
T
W
T
F
S
26
84°
66°
27
81°
65°
28
80°
64°
29
80°
65°
30
83°
66°
31
86°
66°
1
86°
65°
2
83°
64°
3
87°
64°
4
87°
57°
5
80°
59°
6
82°
58°
7
81°
57°
8
78°
58°
9
77°
56°
10
79°
60°
11
81°
64°
12
84°
63°
13
83°
56°
14
79°
56°
15
79°
57°
16
80°
60°
17
79°
57°
18
78°
55°
19
79°
55°
20
80°
56°
21
81°
59°
22
82°
62°
23
85°
63°
24
84°
63°
25
85°
62°
26
86°
61°
27
84°
58°
28
83°
62°
29
83°
58°
30
79°
53°
31
76°
51°
1
74°
53°
2
74°
51°
3
75°
52°
4
75°
52°
5
73°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Wallaceburg
Wallaceburg's August 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 51° and 66°. 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 Wallaceburg. See also: September | October | November.