S
M
T
W
T
F
S
26
78°
59°
27
78°
61°
28
82°
65°
29
82°
67°
30
82°
65°
31
82°
61°
1
79°
68°
2
75°
63°
3
82°
62°
4
80°
61°
5
78°
63°
6
82°
68°
7
78°
71°
8
81°
69°
9
78°
65°
10
82°
68°
11
83°
67°
12
75°
65°
13
85°
64°
14
78°
65°
15
74°
68°
16
76°
68°
17
82°
61°
18
80°
65°
19
78°
58°
20
78°
59°
21
77°
62°
22
77°
63°
23
76°
61°
24
74°
60°
25
75°
60°
26
79°
64°
27
78°
62°
28
79°
66°
29
80°
58°
30
77°
63°
31
70°
56°
1
71°
58°
2
72°
62°
3
70°
61°
4
70°
61°
5
71°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Toronto
Toronto's August 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 56° and 68°. The average high for August is 76° with an average low of 61°. 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 Toronto. See also: September | October | November.