S
M
T
W
T
F
S
30
62°
56°
31
71°
56°
1
71°
54°
2
64°
56°
3
66°
54°
4
63°
55°
5
70°
55°
6
71°
51°
7
68°
58°
8
71°
56°
9
67°
55°
10
69°
56°
11
65°
51°
12
71°
50°
13
69°
52°
14
62°
56°
15
70°
54°
16
71°
52°
17
69°
51°
18
66°
48°
19
66°
50°
20
67°
50°
21
69°
50°
22
67°
47°
23
63°
46°
24
62°
47°
25
61°
45°
26
64°
48°
27
64°
49°
28
63°
49°
29
62°
50°
30
62°
48°
1
65°
49°
2
61°
43°
3
61°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Comox
Comox's September 2026 forecast shows daily high temperatures ranging from 61° to 69°, with overnight lows between 43° and 50°. The average high for September is 64° with an average low of 48°. 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 Comox. See also: October | November | December.