S
M
T
W
T
F
S
30
90°
54°
31
77°
55°
1
78°
56°
2
80°
58°
3
74°
56°
4
80°
54°
5
83°
55°
6
83°
56°
7
85°
59°
8
93°
62°
9
94°
61°
10
88°
61°
11
96°
59°
12
90°
59°
13
91°
58°
14
89°
57°
15
91°
61°
16
87°
60°
17
90°
60°
18
90°
58°
19
83°
55°
20
85°
57°
21
87°
58°
22
89°
59°
23
86°
57°
24
80°
52°
25
79°
53°
26
79°
52°
27
78°
51°
28
78°
52°
29
80°
53°
30
79°
55°
1
78°
51°
2
79°
53°
3
84°
56°
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 74° to 96°, with overnight lows between 51° and 62°. The average high for September is 84° with an average low of 56°. 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.
