S
M
T
W
T
F
S
30
68°
51°
31
79°
45°
1
82°
48°
2
73°
53°
3
65°
49°
4
65°
43°
5
70°
43°
6
76°
43°
7
73°
51°
8
78°
45°
9
82°
48°
10
76°
57°
11
73°
38°
12
76°
37°
13
65°
48°
14
67°
40°
15
61°
47°
16
65°
41°
17
74°
38°
18
77°
41°
19
78°
42°
20
81°
42°
21
82°
43°
22
78°
44°
23
74°
41°
24
63°
41°
25
62°
51°
26
58°
38°
27
61°
32°
28
66°
35°
29
60°
46°
30
63°
36°
1
57°
37°
2
61°
45°
3
62°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kelowna
Kelowna's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Kelowna. See also: October | November | December.