S
M
T
W
T
F
S
30
75°
54°
31
76°
53°
1
71°
65°
2
70°
64°
3
82°
59°
4
80°
54°
5
75°
54°
6
73°
47°
7
78°
44°
8
75°
48°
9
74°
55°
10
81°
59°
11
75°
46°
12
75°
40°
13
73°
62°
14
69°
44°
15
69°
39°
16
73°
51°
17
70°
55°
18
76°
50°
19
62°
41°
20
58°
39°
21
62°
42°
22
66°
41°
23
67°
39°
24
68°
34°
25
73°
40°
26
69°
49°
27
66°
57°
28
61°
57°
29
59°
55°
30
69°
56°
1
73°
61°
2
74°
48°
3
67°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wilton
Wilton's September 2026 forecast shows daily high temperatures ranging from 67° to 74°, with overnight lows between 45° and 61°. The average high for September is 71° with an average low of 53°. 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 Wilton. See also: October | November | December.
