S
M
T
W
T
F
S
30
74°
49°
31
81°
46°
1
74°
48°
2
75°
47°
3
74°
53°
4
79°
52°
5
81°
53°
6
81°
53°
7
72°
46°
8
71°
45°
9
72°
46°
10
73°
51°
11
78°
52°
12
78°
52°
13
70°
51°
14
71°
53°
15
70°
51°
16
70°
51°
17
71°
47°
18
70°
51°
19
68°
46°
20
70°
44°
21
69°
43°
22
68°
44°
23
68°
44°
24
71°
48°
25
74°
49°
26
73°
48°
27
67°
50°
28
66°
49°
29
Hist. Avg.
67°
44°
30
Hist. Avg.
66°
44°
1
Hist. Avg.
66°
43°
2
Hist. Avg.
66°
43°
3
Hist. Avg.
65°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Shelton
Shelton's September 2026 forecast shows daily high temperatures ranging from 66° to 81°, with overnight lows between 43° and 53°. The average high for September is 73° with an average low of 49°. 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.