S
M
T
W
T
F
S
29
46°
37°
30
45°
32°
1
42°
33°
2
41°
35°
3
44°
34°
4
40°
30°
5
39°
32°
6
40°
34°
7
42°
35°
8
42°
32°
9
43°
33°
10
41°
33°
11
40°
32°
12
40°
27°
13
41°
26°
14
39°
28°
15
37°
26°
16
38°
28°
17
38°
27°
18
36°
28°
19
37°
28°
20
37°
30°
21
38°
31°
22
40°
33°
23
39°
32°
24
41°
33°
25
40°
34°
26
40°
34°
27
42°
33°
28
40°
27°
29
41°
28°
30
41°
28°
31
39°
31°
1
40°
31°
2
41°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Salt Spring Island
Salt Spring Island's December 2026 forecast shows daily high temperatures ranging from 36° to 46°, with overnight lows between 26° and 37°. The average high for December is 40° 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 Salt Spring Island. See also: January | February | March.