S
M
T
W
T
F
S
29
47°
40°
30
43°
40°
1
45°
39°
2
44°
39°
3
45°
38°
4
44°
38°
5
42°
37°
6
44°
39°
7
43°
39°
8
43°
38°
9
48°
38°
10
44°
35°
11
36°
29°
12
37°
32°
13
39°
35°
14
40°
37°
15
44°
42°
16
45°
34°
17
45°
31°
18
43°
28°
19
38°
27°
20
37°
28°
21
36°
26°
22
37°
23°
23
36°
27°
24
34°
33°
25
39°
34°
26
39°
27°
27
41°
29°
28
40°
26°
29
37°
26°
30
35°
27°
31
35°
26°
1
36°
26°
2
34°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Port Coquitlam
Port Coquitlam's December 2026 forecast shows daily high temperatures ranging from 34° to 48°, with overnight lows between 23° and 42°. The average high for December is 40° with an average low of 33°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Port Coquitlam. See also: January | February | March.