S
M
T
W
T
F
S
30
69°
58°
31
78°
52°
1
74°
55°
2
71°
59°
3
71°
56°
4
67°
50°
5
77°
55°
6
77°
51°
7
64°
54°
8
75°
59°
9
76°
53°
10
74°
58°
11
71°
52°
12
73°
51°
13
67°
56°
14
65°
55°
15
71°
49°
16
77°
49°
17
78°
51°
18
75°
54°
19
73°
51°
20
76°
54°
21
71°
53°
22
70°
52°
23
69°
51°
24
70°
53°
25
67°
52°
26
69°
53°
27
62°
49°
28
60°
49°
29
60°
50°
30
59°
47°
1
59°
48°
2
60°
47°
3
58°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Port Coquitlam
Port Coquitlam's September 2026 forecast shows daily high temperatures ranging from 58° to 78°, with overnight lows between 44° and 55°. The average high for September is 67° with an average low of 51°. 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 Port Coquitlam. See also: October | November | December.
