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
66°
61°
15
73°
66°
16
76°
62°
17
73°
59°
18
73°
60°
19
67°
62°
20
69°
58°
21
68°
56°
22
65°
57°
23
68°
57°
24
70°
58°
25
71°
57°
26
68°
58°
27
70°
55°
28
71°
54°
29
66°
53°
30
64°
54°
1
66°
55°
2
69°
53°
3
65°
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 64° to 76°, with overnight lows between 53° and 66°. The average high for September is 69° 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.
