S
M
T
W
T
F
S
30
72°
50°
31
78°
50°
1
67°
61°
2
75°
60°
3
73°
58°
4
67°
56°
5
70°
48°
6
73°
51°
7
74°
54°
8
66°
61°
9
74°
49°
10
56°
39°
11
68°
50°
12
71°
50°
13
62°
42°
14
60°
45°
15
62°
41°
16
60°
39°
17
56°
38°
18
55°
40°
19
54°
37°
20
52°
38°
21
54°
31°
22
63°
45°
23
64°
45°
24
64°
46°
25
63°
44°
26
59°
40°
27
61°
44°
28
62°
45°
29
63°
47°
30
64°
47°
1
64°
46°
2
62°
43°
3
60°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rouyn-Noranda
Rouyn-Noranda's September 2026 forecast shows daily high temperatures ranging from 52° to 74°, with overnight lows between 31° and 61°. The average high for September is 62° with an average low of 44°. 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 Rouyn-Noranda. See also: October | November | December.