S
M
T
W
T
F
S
30
89°
65°
31
90°
64°
1
90°
64°
2
89°
63°
3
90°
64°
4
89°
65°
5
89°
63°
6
88°
55°
7
86°
54°
8
79°
57°
9
78°
61°
10
77°
62°
11
83°
61°
12
84°
61°
13
86°
52°
14
85°
51°
15
76°
51°
16
73°
52°
17
73°
50°
18
75°
53°
19
79°
48°
20
73°
48°
21
73°
55°
22
75°
56°
23
81°
56°
24
81°
58°
25
80°
57°
26
82°
57°
27
83°
56°
28
79°
52°
29
76°
51°
30
76°
52°
1
77°
50°
2
80°
54°
3
69°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Salem
Salem's September 2026 forecast shows daily high temperatures ranging from 69° to 90°, with overnight lows between 42° and 65°. The average high for September is 81° with an average low of 56°. 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 Salem. See also: October | November | December.
