S
M
T
W
T
F
S
30
74°
59°
31
74°
61°
1
80°
62°
2
80°
60°
3
79°
55°
4
79°
60°
5
78°
55°
6
78°
54°
7
72°
58°
8
71°
59°
9
71°
54°
10
77°
51°
11
71°
59°
12
73°
53°
13
77°
54°
14
72°
51°
15
70°
57°
16
70°
50°
17
69°
49°
18
Hist. Avg.
71°
51°
19
Hist. Avg.
71°
50°
20
Hist. Avg.
70°
50°
21
Hist. Avg.
70°
50°
22
Hist. Avg.
70°
49°
23
Hist. Avg.
69°
49°
24
Hist. Avg.
69°
48°
25
Hist. Avg.
68°
48°
26
Hist. Avg.
68°
48°
27
Hist. Avg.
68°
47°
28
Hist. Avg.
67°
47°
29
Hist. Avg.
67°
46°
30
Hist. Avg.
66°
46°
1
Hist. Avg.
66°
46°
2
Hist. Avg.
66°
45°
3
Hist. Avg.
65°
45°
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 69° to 80°, with overnight lows between 49° and 62°. The average high for September is 74° 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.