S
M
T
W
T
F
S
30
72°
42°
31
70°
45°
1
72°
44°
2
79°
42°
3
81°
46°
4
80°
48°
5
75°
47°
6
71°
42°
7
74°
49°
8
75°
42°
9
68°
45°
10
66°
44°
11
67°
43°
12
66°
41°
13
66°
38°
14
67°
45°
15
70°
47°
16
67°
41°
17
70°
38°
18
70°
42°
19
73°
45°
20
72°
46°
21
65°
35°
22
63°
40°
23
62°
41°
24
61°
35°
25
61°
35°
26
62°
37°
27
64°
43°
28
61°
39°
29
60°
34°
30
60°
40°
1
66°
42°
2
65°
39°
3
58°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Southeast Kelowna
Southeast Kelowna's September 2026 forecast shows daily high temperatures ranging from 58° to 81°, with overnight lows between 34° and 49°. The average high for September is 68° with an average low of 42°. 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 Southeast Kelowna. See also: October | November | December.
