S
M
T
W
T
F
S
30
70°
57°
31
70°
57°
1
71°
60°
2
72°
62°
3
73°
62°
4
74°
61°
5
76°
63°
6
77°
62°
7
77°
61°
8
74°
60°
9
73°
60°
10
73°
61°
11
71°
61°
12
73°
60°
13
73°
60°
14
75°
59°
15
74°
59°
16
73°
58°
17
73°
59°
18
72°
59°
19
73°
58°
20
70°
57°
21
75°
56°
22
74°
47°
23
66°
45°
24
64°
54°
25
69°
55°
26
68°
54°
27
70°
55°
28
71°
53°
29
72°
56°
30
72°
57°
1
71°
51°
2
71°
48°
3
67°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Toronto
Toronto's September 2026 forecast shows daily high temperatures ranging from 64° to 77°, with overnight lows between 45° and 63°. The average high for September is 72° 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 September weather will actually feel in Toronto. See also: October | November | December.
