S
M
T
W
T
F
S
31
85°
59°
1
88°
62°
2
91°
55°
3
89°
55°
4
85°
59°
5
80°
54°
6
78°
52°
7
83°
60°
8
86°
51°
9
86°
56°
10
82°
55°
11
84°
55°
12
86°
50°
13
85°
56°
14
77°
58°
15
82°
60°
16
83°
50°
17
88°
50°
18
81°
57°
19
78°
51°
20
85°
43°
21
73°
57°
22
75°
39°
23
76°
43°
24
80°
46°
25
85°
42°
26
72°
39°
27
74°
48°
28
69°
51°
29
75°
49°
30
70°
55°
1
67°
58°
2
68°
46°
3
70°
36°
4
62°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Penticton 1
Penticton 1's September 2025 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 1. See also: October | November | December.
