S
M
T
W
T
F
S
30
75°
51°
31
74°
47°
1
69°
49°
2
68°
48°
3
68°
47°
4
69°
48°
5
68°
47°
6
68°
48°
7
71°
52°
8
73°
54°
9
67°
47°
10
68°
50°
11
70°
53°
12
70°
50°
13
71°
51°
14
72°
50°
15
68°
46°
16
65°
44°
17
63°
45°
18
66°
51°
19
64°
46°
20
64°
51°
21
Hist. Avg.
66°
46°
22
Hist. Avg.
66°
45°
23
Hist. Avg.
65°
45°
24
Hist. Avg.
65°
45°
25
Hist. Avg.
65°
44°
26
Hist. Avg.
64°
44°
27
Hist. Avg.
64°
44°
28
Hist. Avg.
63°
44°
29
Hist. Avg.
63°
43°
30
Hist. Avg.
62°
43°
1
Hist. Avg.
62°
43°
2
Hist. Avg.
62°
42°
3
Hist. Avg.
61°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in North Dundas
North Dundas's September 2026 forecast shows daily high temperatures ranging from 63° to 75°, with overnight lows between 44° and 54°. The average high for September is 69° with an average low of 49°. 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 North Dundas. See also: October | November | December.