S
M
T
W
T
F
S
30
81°
52°
31
72°
51°
1
72°
51°
2
71°
59°
3
76°
54°
4
75°
50°
5
70°
51°
6
71°
59°
7
77°
58°
8
80°
59°
9
79°
58°
10
78°
56°
11
73°
57°
12
70°
56°
13
78°
55°
14
76°
55°
15
Hist. Avg.
72°
52°
16
Hist. Avg.
71°
51°
17
Hist. Avg.
71°
51°
18
Hist. Avg.
71°
51°
19
Hist. Avg.
70°
50°
20
Hist. Avg.
70°
50°
21
Hist. Avg.
70°
50°
22
Hist. Avg.
69°
50°
23
Hist. Avg.
69°
49°
24
Hist. Avg.
68°
49°
25
Hist. Avg.
68°
48°
26
Hist. Avg.
68°
48°
27
Hist. Avg.
67°
48°
28
Hist. Avg.
67°
47°
29
Hist. Avg.
67°
47°
30
Hist. Avg.
66°
47°
1
Hist. Avg.
66°
46°
2
Hist. Avg.
65°
46°
3
Hist. Avg.
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Dundas
Dundas's September 2026 forecast shows daily high temperatures ranging from 70° to 81°, with overnight lows between 50° and 59°. The average high for September is 75° 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 Dundas. See also: October | November | December.
