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
70°
60°
7
76°
62°
8
75°
66°
9
79°
63°
10
76°
56°
11
72°
57°
12
77°
63°
13
78°
62°
14
69°
57°
15
70°
58°
16
69°
57°
17
68°
58°
18
68°
57°
19
70°
53°
20
73°
58°
21
63°
56°
22
64°
55°
23
65°
56°
24
67°
57°
25
71°
56°
26
70°
54°
27
64°
54°
28
69°
55°
29
70°
57°
30
71°
57°
1
71°
56°
2
68°
53°
3
67°
49°
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 63° to 79°, with overnight lows between 49° and 66°. 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.
