S
M
T
W
T
F
S
30
67°
46°
31
68°
50°
1
64°
51°
2
66°
49°
3
66°
45°
4
67°
48°
5
64°
46°
6
64°
45°
7
65°
44°
8
65°
44°
9
69°
51°
10
68°
51°
11
71°
49°
12
71°
51°
13
70°
50°
14
63°
42°
15
67°
42°
16
68°
45°
17
69°
46°
18
70°
43°
19
69°
49°
20
68°
41°
21
61°
44°
22
67°
47°
23
68°
41°
24
64°
44°
25
66°
46°
26
66°
48°
27
67°
46°
28
60°
44°
29
57°
39°
30
56°
43°
1
56°
40°
2
54°
37°
3
53°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Whistler
Whistler's September 2026 forecast shows daily high temperatures ranging from 53° to 71°, with overnight lows between 36° and 51°. The average high for September is 65° with an average low of 45°. 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 Whistler. See also: October | November | December.
