S
M
T
W
T
F
S
30
88°
64°
31
90°
63°
1
84°
57°
2
88°
64°
3
88°
70°
4
91°
70°
5
81°
66°
6
77°
66°
7
77°
67°
8
79°
60°
9
77°
53°
10
78°
60°
11
82°
55°
12
74°
54°
13
67°
51°
14
70°
49°
15
67°
50°
16
72°
52°
17
71°
51°
18
72°
49°
19
66°
48°
20
70°
47°
21
69°
51°
22
72°
53°
23
71°
53°
24
74°
52°
25
71°
52°
26
70°
51°
27
73°
53°
28
72°
53°
29
69°
52°
30
71°
49°
1
62°
44°
2
58°
39°
3
57°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dundas
Dundas's September 2026 forecast shows daily high temperatures ranging from 57° to 82°, with overnight lows between 37° and 67°. The average high for September is 71° with an average low of 51°. 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 Dundas. See also: October | November | December.
