S
M
T
W
T
F
S
30
78°
59°
31
81°
59°
1
82°
58°
2
82°
59°
3
81°
51°
4
80°
50°
5
73°
53°
6
73°
57°
7
76°
57°
8
78°
56°
9
79°
57°
10
78°
55°
11
77°
52°
12
78°
53°
13
77°
56°
14
77°
57°
15
78°
56°
16
78°
49°
17
76°
55°
18
73°
53°
19
75°
50°
20
72°
46°
21
67°
44°
22
67°
49°
23
68°
47°
24
72°
44°
25
65°
43°
26
64°
42°
27
65°
48°
28
70°
49°
29
71°
44°
30
67°
43°
1
63°
46°
2
63°
40°
3
Hist. Avg.
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in North Salem
North Salem's September 2026 forecast shows daily high temperatures ranging from 63° to 82°, with overnight lows between 40° and 59°. The average high for September is 74° with an average low of 51°. 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 North Salem. See also: October | November | December.