S
M
T
W
T
F
S
30
54°
45°
31
52°
41°
1
50°
43°
2
49°
44°
3
51°
41°
4
50°
42°
5
49°
44°
6
48°
41°
7
47°
41°
8
47°
42°
9
48°
37°
10
42°
35°
11
41°
36°
12
42°
35°
13
42°
34°
14
40°
33°
15
35°
32°
16
36°
32°
17
35°
31°
18
36°
32°
19
35°
31°
20
34°
32°
21
39°
33°
22
39°
32°
23
36°
31°
24
35°
32°
25
36°
31°
26
33°
29°
27
32°
28°
28
30°
27°
29
31°
28°
30
34°
28°
1
30°
29°
2
32°
30°
3
32°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cape Dorset
Cape Dorset's September 2026 forecast shows daily high temperatures ranging from 30° to 54°, with overnight lows between 27° and 45°. The average high for September is 40° with an average low of 35°. 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 Cape Dorset. See also: October | November | December.
