S
M
T
W
T
F
S
30
74°
57°
31
68°
55°
1
66°
55°
2
66°
54°
3
65°
55°
4
65°
54°
5
66°
52°
6
65°
54°
7
69°
54°
8
73°
50°
9
71°
51°
10
69°
54°
11
71°
48°
12
70°
49°
13
68°
53°
14
70°
51°
15
70°
45°
16
69°
43°
17
62°
44°
18
62°
51°
19
63°
44°
20
66°
42°
21
61°
46°
22
60°
49°
23
64°
49°
24
66°
48°
25
61°
49°
26
66°
48°
27
62°
41°
28
66°
41°
29
66°
39°
30
55°
42°
1
56°
41°
2
57°
40°
3
56°
46°
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 55° to 74°, with overnight lows between 39° and 57°. The average high for September is 65° with an average low of 48°. 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.
