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
80°
66°
15
76°
67°
16
76°
66°
17
82°
62°
18
80°
67°
19
77°
61°
20
74°
59°
21
74°
62°
22
75°
61°
23
77°
64°
24
76°
63°
25
77°
62°
26
76°
62°
27
74°
58°
28
71°
57°
29
73°
62°
30
77°
63°
31
79°
62°
1
79°
64°
2
78°
63°
3
78°
62°
4
75°
62°
5
74°
60°
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 71° to 82°, with overnight lows between 57° and 67°. The average high for August is 76° with an average low of 62°. 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.