S
M
T
W
T
F
S
26
69°
42°
27
63°
46°
28
60°
45°
29
70°
47°
30
71°
48°
1
62°
47°
2
65°
48°
3
64°
47°
4
65°
49°
5
66°
50°
6
71°
53°
7
62°
47°
8
65°
47°
9
65°
50°
10
66°
50°
11
64°
49°
12
58°
48°
13
58°
47°
14
59°
47°
15
60°
49°
16
67°
52°
17
67°
52°
18
65°
53°
19
65°
53°
20
66°
52°
21
65°
53°
22
63°
53°
23
62°
51°
24
62°
50°
25
64°
53°
26
65°
54°
27
68°
54°
28
69°
53°
29
70°
54°
30
67°
54°
31
62°
53°
1
63°
55°
2
63°
52°
3
68°
55°
4
71°
55°
5
62°
50°
6
66°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port Coquitlam
Port Coquitlam's May 2026 forecast shows daily high temperatures ranging from 58° to 71°, with overnight lows between 42° and 56°. The average high for May is 65° 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 May weather will actually feel in Port Coquitlam. See also: June | July | August.