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
64°
58°
20
70°
52°
21
61°
51°
22
62°
53°
23
63°
55°
24
63°
53°
25
67°
54°
26
68°
58°
27
71°
54°
28
65°
53°
29
69°
56°
30
68°
57°
1
66°
55°
2
67°
47°
3
60°
53°
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 71°, with overnight lows between 47° and 58°. The average high for September is 66° 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.
