S
M
T
W
T
F
S
30
86°
65°
31
86°
65°
1
85°
64°
2
86°
65°
3
86°
64°
4
85°
64°
5
85°
65°
6
86°
65°
7
87°
64°
8
87°
65°
9
86°
64°
10
84°
63°
11
85°
64°
12
86°
65°
13
86°
63°
14
75°
52°
15
73°
59°
16
75°
60°
17
74°
54°
18
78°
52°
19
73°
50°
20
77°
51°
21
76°
54°
22
79°
57°
23
80°
52°
24
73°
48°
25
71°
54°
26
75°
57°
27
80°
50°
28
76°
46°
29
69°
46°
30
69°
51°
1
72°
54°
2
77°
54°
3
78°
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 69° to 87°, with overnight lows between 46° and 65°. The average high for September is 80° with an average low of 58°. 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.
