S
M
T
W
T
F
S
30
76°
50°
31
83°
50°
1
84°
51°
2
84°
55°
3
67°
53°
4
71°
52°
5
74°
53°
6
78°
46°
7
71°
59°
8
80°
48°
9
82°
54°
10
80°
59°
11
77°
54°
12
78°
51°
13
62°
45°
14
73°
54°
15
64°
49°
16
78°
48°
17
80°
52°
18
81°
54°
19
83°
57°
20
80°
56°
21
78°
55°
22
78°
55°
23
73°
52°
24
72°
53°
25
73°
51°
26
84°
52°
27
63°
38°
28
63°
37°
29
62°
39°
30
61°
36°
1
61°
36°
2
62°
37°
3
60°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Osoyoos
Osoyoos's September 2026 forecast shows daily high temperatures ranging from 60° to 84°, with overnight lows between 35° and 57°. The average high for September is 71° with an average low of 47°. 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 Osoyoos. See also: October | November | December.
