S
M
T
W
T
F
S
30
63°
52°
31
72°
52°
1
77°
55°
2
66°
51°
3
64°
51°
4
68°
50°
5
71°
52°
6
75°
54°
7
75°
53°
8
71°
54°
9
73°
53°
10
74°
53°
11
74°
53°
12
71°
51°
13
72°
52°
14
69°
47°
15
70°
51°
16
65°
51°
17
65°
50°
18
66°
50°
19
64°
49°
20
64°
47°
21
63°
45°
22
63°
46°
23
62°
42°
24
62°
42°
25
64°
44°
26
65°
46°
27
69°
49°
28
66°
48°
29
61°
47°
30
65°
48°
1
67°
48°
2
62°
47°
3
65°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Salt Spring Island
Salt Spring Island's September 2026 forecast shows daily high temperatures ranging from 61° to 77°, with overnight lows between 42° and 55°. The average high for September is 68° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Salt Spring Island. See also: October | November | December.