S
M
T
W
T
F
S
26
69°
41°
27
60°
45°
28
59°
50°
29
69°
46°
30
77°
46°
1
77°
49°
2
80°
52°
3
84°
50°
4
83°
52°
5
69°
53°
6
60°
54°
7
69°
54°
8
62°
53°
9
72°
53°
10
70°
50°
11
74°
52°
12
84°
49°
13
65°
54°
14
61°
49°
15
53°
45°
16
59°
45°
17
66°
46°
18
68°
49°
19
65°
49°
20
65°
49°
21
68°
48°
22
67°
51°
23
67°
51°
24
67°
52°
25
69°
53°
26
68°
50°
27
77°
60°
28
62°
53°
29
62°
52°
30
63°
51°
31
67°
54°
1
68°
55°
2
62°
54°
3
63°
51°
4
62°
52°
5
62°
54°
6
63°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Coquitlam
Coquitlam's May 2026 forecast shows daily high temperatures ranging from 53° to 77°, with overnight lows between 45° and 60°. 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 Coquitlam. See also: June | July | August.