S
M
T
W
T
F
S
30
72°
51°
31
71°
43°
1
62°
43°
2
61°
49°
3
66°
52°
4
70°
44°
5
67°
42°
6
59°
41°
7
58°
41°
8
57°
42°
9
58°
37°
10
58°
42°
11
56°
41°
12
56°
40°
13
54°
36°
14
54°
39°
15
56°
48°
16
61°
44°
17
63°
40°
18
62°
37°
19
53°
39°
20
54°
38°
21
54°
46°
22
55°
40°
23
53°
40°
24
53°
44°
25
52°
39°
26
52°
36°
27
51°
35°
28
49°
37°
29
48°
39°
30
48°
36°
1
51°
42°
2
55°
43°
3
47°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Opaskwayak
Opaskwayak's September 2026 forecast shows daily high temperatures ranging from 47° to 72°, with overnight lows between 34° and 52°. The average high for September is 57° with an average low of 41°. 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 Opaskwayak. See also: October | November | December.