S
M
T
W
T
F
S
30
80°
60°
31
82°
63°
1
81°
63°
2
76°
58°
3
75°
54°
4
74°
54°
5
74°
55°
6
75°
57°
7
79°
61°
8
82°
58°
9
77°
54°
10
77°
60°
11
73°
49°
12
71°
52°
13
70°
51°
14
71°
50°
15
71°
53°
16
72°
49°
17
70°
50°
18
72°
49°
19
70°
47°
20
68°
46°
21
68°
47°
22
69°
47°
23
72°
48°
24
73°
54°
25
77°
56°
26
77°
55°
27
69°
54°
28
70°
53°
29
68°
45°
30
68°
45°
1
66°
53°
2
75°
43°
3
75°
42°
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 66° to 82°, with overnight lows between 42° and 63°. The average high for September is 73° with an average low of 52°. 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.
