S
M
T
W
T
F
S
30
70°
63°
31
68°
65°
1
78°
66°
2
78°
66°
3
82°
64°
4
76°
66°
5
74°
62°
6
71°
62°
7
74°
61°
8
76°
60°
9
73°
69°
10
80°
62°
11
70°
56°
12
73°
61°
13
81°
59°
14
68°
55°
15
71°
62°
16
77°
62°
17
73°
61°
18
71°
58°
19
63°
55°
20
69°
59°
21
59°
52°
22
62°
49°
23
65°
54°
24
64°
52°
25
69°
49°
26
74°
57°
27
77°
57°
28
67°
60°
29
70°
59°
30
71°
61°
1
74°
56°
2
66°
50°
3
64°
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 50° and 61°. The average high for September is 70° 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.
