S
M
T
W
T
F
S
30
73°
52°
31
82°
45°
1
68°
53°
2
61°
51°
3
62°
46°
4
67°
46°
5
72°
45°
6
77°
50°
7
74°
54°
8
70°
49°
9
76°
50°
10
77°
51°
11
74°
51°
12
72°
50°
13
74°
50°
14
73°
47°
15
67°
48°
16
68°
49°
17
68°
48°
18
68°
44°
19
68°
43°
20
70°
50°
21
68°
47°
22
67°
46°
23
67°
42°
24
65°
42°
25
65°
41°
26
69°
43°
27
73°
46°
28
74°
47°
29
74°
48°
30
73°
47°
1
72°
48°
2
73°
48°
3
72°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Shelton
Shelton's September 2026 forecast shows daily high temperatures ranging from 61° to 77°, with overnight lows between 41° and 54°. The average high for September is 70° with an average low of 47°. 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 Shelton. See also: October | November | December.