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
75°
58°
18
71°
57°
19
65°
56°
20
69°
52°
21
66°
53°
22
62°
57°
23
64°
59°
24
68°
55°
25
67°
54°
26
68°
56°
27
70°
57°
28
72°
58°
29
69°
56°
30
68°
48°
1
66°
55°
2
60°
50°
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 75°, with overnight lows between 48° and 59°. The average high for September is 67° with an average low of 55°. 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.
