S
M
T
W
T
F
S
30
74°
54°
31
74°
54°
1
75°
55°
2
76°
55°
3
75°
54°
4
76°
53°
5
76°
52°
6
75°
53°
7
73°
50°
8
74°
51°
9
72°
57°
10
73°
51°
11
72°
50°
12
72°
50°
13
73°
56°
14
75°
52°
15
77°
54°
16
78°
56°
17
79°
56°
18
79°
55°
19
78°
47°
20
76°
47°
21
68°
52°
22
69°
53°
23
72°
53°
24
74°
54°
25
75°
46°
26
73°
43°
27
70°
45°
28
65°
44°
29
65°
44°
30
64°
45°
1
63°
44°
2
63°
40°
3
Hist. Avg.
69°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Salem
West Salem's September 2026 forecast shows daily high temperatures ranging from 63° to 79°, with overnight lows between 40° and 57°. The average high for September is 73° with an average low of 51°. 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 West Salem. See also: October | November | December.