S
M
T
W
T
F
S
30
90°
54°
31
77°
55°
1
78°
56°
2
80°
57°
3
73°
57°
4
80°
54°
5
83°
55°
6
83°
53°
7
85°
59°
8
93°
62°
9
94°
61°
10
88°
59°
11
86°
59°
12
87°
57°
13
85°
58°
14
89°
58°
15
88°
57°
16
87°
60°
17
90°
60°
18
84°
60°
19
89°
60°
20
90°
59°
21
91°
60°
22
90°
59°
23
87°
59°
24
86°
58°
25
89°
59°
26
90°
60°
27
90°
60°
28
89°
59°
29
89°
60°
30
88°
60°
1
89°
59°
2
87°
59°
3
84°
58°
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 73° to 94°, with overnight lows between 53° and 62°. The average high for September is 87° with an average low of 59°. 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.
