S
M
T
W
T
F
S
30
79°
60°
31
79°
58°
1
78°
57°
2
76°
56°
3
78°
53°
4
73°
53°
5
73°
57°
6
Hist. Avg.
73°
56°
7
Hist. Avg.
72°
55°
8
Hist. Avg.
72°
55°
9
Hist. Avg.
72°
55°
10
Hist. Avg.
71°
54°
11
Hist. Avg.
71°
54°
12
Hist. Avg.
71°
54°
13
Hist. Avg.
70°
53°
14
Hist. Avg.
70°
53°
15
Hist. Avg.
70°
53°
16
Hist. Avg.
69°
52°
17
Hist. Avg.
69°
52°
18
Hist. Avg.
68°
52°
19
Hist. Avg.
68°
51°
20
Hist. Avg.
68°
51°
21
Hist. Avg.
67°
51°
22
Hist. Avg.
67°
50°
23
Hist. Avg.
66°
50°
24
Hist. Avg.
66°
50°
25
Hist. Avg.
66°
49°
26
Hist. Avg.
65°
49°
27
Hist. Avg.
65°
49°
28
Hist. Avg.
64°
48°
29
Hist. Avg.
64°
48°
30
Hist. Avg.
64°
48°
1
Hist. Avg.
63°
47°
2
Hist. Avg.
63°
47°
3
Hist. Avg.
62°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Vaughan
Vaughan's September 2026 forecast shows daily high temperatures ranging from 73° to 79°, with overnight lows between 53° and 60°. The average high for September is 77° with an average low of 56°. 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 Vaughan. See also: October | November | December.