S
M
T
W
T
F
S
30
76°
57°
31
76°
53°
1
77°
59°
2
76°
59°
3
81°
66°
4
76°
62°
5
72°
57°
6
74°
55°
7
80°
55°
8
74°
61°
9
71°
59°
10
73°
55°
11
67°
52°
12
76°
53°
13
79°
62°
14
67°
49°
15
66°
45°
16
76°
58°
17
70°
56°
18
68°
47°
19
63°
43°
20
64°
50°
21
61°
47°
22
63°
44°
23
67°
45°
24
70°
44°
25
75°
53°
26
74°
54°
27
66°
54°
28
61°
53°
29
65°
57°
30
71°
58°
1
70°
57°
2
71°
54°
3
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dorval
Dorval's September 2026 forecast shows daily high temperatures ranging from 61° to 75°, with overnight lows between 52° and 58°. The average high for September is 69° 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 Dorval. See also: October | November | December.
