S
M
T
W
T
F
S
30
71°
49°
31
81°
46°
1
80°
49°
2
76°
57°
3
66°
52°
4
69°
49°
5
72°
50°
6
75°
46°
7
71°
51°
8
78°
44°
9
80°
50°
10
77°
59°
11
74°
46°
12
77°
47°
13
65°
54°
14
67°
51°
15
63°
51°
16
65°
48°
17
71°
44°
18
74°
43°
19
75°
42°
20
81°
44°
21
81°
45°
22
77°
50°
23
N/A
24
63°
47°
25
65°
49°
26
62°
44°
27
60°
38°
28
67°
36°
29
66°
49°
30
66°
41°
1
57°
43°
2
63°
45°
3
63°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Penticton
Penticton'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 Penticton. See also: October | November | December.
