S
M
T
W
T
F
S
30
55°
43°
31
54°
45°
1
50°
42°
2
52°
41°
3
57°
43°
4
48°
42°
5
57°
42°
6
43°
37°
7
41°
37°
8
42°
37°
9
41°
36°
10
43°
34°
11
40°
33°
12
41°
33°
13
42°
37°
14
43°
36°
15
39°
36°
16
42°
36°
17
41°
33°
18
39°
33°
19
42°
33°
20
39°
30°
21
37°
28°
22
45°
30°
23
50°
37°
24
44°
34°
25
N/A
26
45°
35°
27
37°
34°
28
43°
37°
29
43°
36°
30
40°
35°
1
42°
36°
2
38°
32°
3
33°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cape Dorset
Cape Dorset's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.