S
M
T
W
T
F
S
30
83°
63°
31
82°
63°
1
81°
62°
2
82°
63°
3
83°
63°
4
82°
62°
5
82°
62°
6
81°
61°
7
82°
59°
8
74°
57°
9
77°
58°
10
78°
59°
11
80°
58°
12
73°
56°
13
66°
49°
14
64°
52°
15
65°
55°
16
71°
54°
17
65°
47°
18
69°
51°
19
75°
54°
20
74°
54°
21
73°
53°
22
76°
45°
23
73°
50°
24
70°
53°
25
67°
53°
26
72°
43°
27
72°
40°
28
62°
44°
29
67°
50°
30
64°
44°
1
65°
49°
2
60°
51°
3
70°
50°
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 60° to 83°, with overnight lows between 40° and 63°. The average high for September is 73° 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 September weather will actually feel in Toronto. See also: October | November | December.
