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
68°
56°
14
64°
54°
15
72°
50°
16
77°
49°
17
78°
51°
18
79°
54°
19
75°
53°
20
72°
54°
21
70°
53°
22
71°
53°
23
67°
51°
24
66°
53°
25
67°
52°
26
74°
58°
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 79°, with overnight lows between 44° and 58°. The average high for September is 68° 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.
