S
M
T
W
T
F
S
29
36°
27°
30
34°
30°
1
35°
32°
2
37°
35°
3
40°
36°
4
39°
37°
5
39°
33°
6
40°
29°
7
41°
32°
8
43°
37°
9
41°
37°
10
42°
35°
11
43°
30°
12
42°
29°
13
40°
36°
14
37°
33°
15
39°
30°
16
38°
36°
17
39°
37°
18
41°
36°
19
40°
35°
20
40°
36°
21
39°
38°
22
40°
35°
23
41°
33°
24
38°
26°
25
36°
21°
26
37°
24°
27
29°
23°
28
28°
25°
29
31°
22°
30
32°
25°
31
31°
30°
1
39°
31°
2
40°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Squamish
Squamish's December 2026 forecast shows daily high temperatures ranging from 28° to 43°, with overnight lows between 21° and 38°. The average high for December is 38° with an average low of 31°. 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 Squamish. See also: January | February | March.