S
M
T
W
T
F
S
30
58°
51°
31
75°
45°
1
68°
49°
2
63°
51°
3
64°
44°
4
55°
49°
5
70°
46°
6
74°
40°
7
68°
44°
8
70°
53°
9
71°
46°
10
70°
50°
11
67°
47°
12
75°
44°
13
74°
42°
14
56°
52°
15
70°
48°
16
75°
40°
17
79°
44°
18
75°
48°
19
71°
43°
20
73°
45°
21
69°
43°
22
64°
41°
23
61°
41°
24
64°
45°
25
64°
44°
26
63°
44°
27
66°
45°
28
64°
44°
29
66°
40°
30
54°
38°
1
53°
38°
2
57°
43°
3
55°
42°
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 79°, with overnight lows between 38° and 48°. The average high for September is 65° with an average low of 43°. 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.
