S
M
T
W
T
F
S
30
70°
45°
31
73°
50°
1
71°
43°
2
68°
42°
3
69°
41°
4
70°
47°
5
69°
41°
6
66°
40°
7
66°
40°
8
67°
41°
9
69°
46°
10
73°
48°
11
71°
47°
12
70°
40°
13
67°
40°
14
66°
42°
15
68°
37°
16
68°
43°
17
73°
40°
18
74°
44°
19
75°
43°
20
73°
43°
21
63°
39°
22
69°
43°
23
72°
40°
24
67°
41°
25
68°
43°
26
70°
47°
27
71°
45°
28
69°
40°
29
62°
35°
30
61°
42°
1
59°
36°
2
56°
38°
3
55°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Salmon Arm
Salmon Arm's September 2026 forecast shows daily high temperatures ranging from 55° to 75°, with overnight lows between 33° and 50°. 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 Salmon Arm. See also: October | November | December.