S
M
T
W
T
F
S
30
70°
46°
31
73°
50°
1
70°
43°
2
68°
42°
3
69°
42°
4
70°
48°
5
69°
42°
6
66°
41°
7
67°
41°
8
68°
42°
9
70°
47°
10
75°
49°
11
73°
48°
12
71°
41°
13
68°
42°
14
66°
41°
15
68°
38°
16
69°
43°
17
74°
41°
18
75°
44°
19
74°
43°
20
74°
45°
21
66°
41°
22
70°
43°
23
73°
42°
24
68°
42°
25
70°
44°
26
72°
47°
27
72°
45°
28
70°
40°
29
63°
36°
30
61°
42°
1
59°
37°
2
57°
37°
3
56°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Kelowna
West Kelowna's September 2026 forecast shows daily high temperatures ranging from 56° to 75°, with overnight lows between 34° and 50°. The average high for September is 69° 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 West Kelowna. See also: October | November | December.