S
M
T
W
T
F
S
30
91°
69°
31
91°
69°
1
90°
68°
2
91°
68°
3
91°
67°
4
90°
68°
5
90°
68°
6
89°
67°
7
90°
67°
8
90°
66°
9
89°
67°
10
90°
67°
11
90°
68°
12
89°
68°
13
88°
67°
14
87°
62°
15
79°
64°
16
87°
64°
17
88°
62°
18
85°
62°
19
85°
62°
20
84°
61°
21
85°
60°
22
78°
61°
23
75°
60°
24
76°
60°
25
78°
59°
26
79°
60°
27
82°
59°
28
82°
60°
29
81°
60°
30
80°
57°
1
80°
47°
2
71°
47°
3
70°
50°
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 70° to 91°, with overnight lows between 47° and 69°. The average high for September is 85° with an average low of 63°. 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.
