S
M
T
W
T
F
S
30
83°
63°
31
86°
63°
1
86°
57°
2
84°
60°
3
83°
58°
4
77°
59°
5
77°
58°
6
79°
57°
7
80°
53°
8
79°
52°
9
77°
58°
10
76°
60°
11
83°
59°
12
82°
58°
13
82°
58°
14
81°
57°
15
82°
58°
16
74°
50°
17
73°
49°
18
73°
49°
19
Hist. Avg.
76°
54°
20
Hist. Avg.
76°
53°
21
Hist. Avg.
75°
53°
22
Hist. Avg.
75°
52°
23
Hist. Avg.
75°
52°
24
Hist. Avg.
74°
51°
25
Hist. Avg.
74°
51°
26
Hist. Avg.
73°
50°
27
Hist. Avg.
73°
50°
28
Hist. Avg.
72°
50°
29
Hist. Avg.
72°
49°
30
Hist. Avg.
72°
49°
1
Hist. Avg.
71°
48°
2
Hist. Avg.
71°
48°
3
Hist. Avg.
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Salem
Salem's September 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 49° and 63°. The average high for September is 80° with an average low of 57°. 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.