S
M
T
W
T
F
S
30
86°
58°
31
81°
56°
1
80°
56°
2
80°
57°
3
81°
62°
4
83°
62°
5
86°
58°
6
79°
58°
7
79°
56°
8
80°
56°
9
78°
54°
10
79°
54°
11
78°
53°
12
76°
53°
13
75°
54°
14
76°
53°
15
77°
54°
16
78°
53°
17
81°
55°
18
82°
55°
19
81°
58°
20
Hist. Avg.
78°
56°
21
Hist. Avg.
77°
56°
22
Hist. Avg.
77°
55°
23
Hist. Avg.
76°
55°
24
Hist. Avg.
76°
54°
25
Hist. Avg.
76°
54°
26
Hist. Avg.
75°
54°
27
Hist. Avg.
75°
53°
28
Hist. Avg.
75°
53°
29
Hist. Avg.
74°
53°
30
Hist. Avg.
74°
52°
1
Hist. Avg.
74°
52°
2
Hist. Avg.
73°
52°
3
Hist. Avg.
73°
51°
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 75° to 86°, with overnight lows between 53° and 62°. The average high for September is 80° 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.