S
M
T
W
T
F
S
30
67°
48°
31
63°
48°
1
59°
46°
2
61°
46°
3
67°
49°
4
68°
50°
5
69°
48°
6
67°
47°
7
67°
49°
8
70°
48°
9
67°
48°
10
66°
47°
11
65°
46°
12
63°
45°
13
60°
46°
14
54°
36°
15
54°
38°
16
56°
38°
17
55°
39°
18
55°
39°
19
54°
31°
20
57°
43°
21
62°
34°
22
62°
34°
23
52°
29°
24
52°
39°
25
53°
37°
26
59°
33°
27
54°
30°
28
48°
31°
29
48°
31°
30
49°
34°
1
48°
30°
2
48°
27°
3
46°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Waskaganish
Waskaganish's September 2026 forecast shows daily high temperatures ranging from 46° to 70°, with overnight lows between 25° and 50°. The average high for September is 58° with an average low of 40°. 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 Waskaganish. See also: October | November | December.