S
M
T
W
T
F
S
30
81°
62°
31
82°
62°
1
84°
64°
2
85°
66°
3
85°
65°
4
84°
65°
5
85°
64°
6
81°
64°
7
80°
63°
8
84°
63°
9
83°
61°
10
84°
59°
11
82°
63°
12
83°
62°
13
82°
63°
14
83°
61°
15
83°
62°
16
83°
63°
17
Hist. Avg.
79°
60°
18
Hist. Avg.
79°
60°
19
Hist. Avg.
79°
59°
20
Hist. Avg.
78°
59°
21
Hist. Avg.
78°
58°
22
Hist. Avg.
77°
58°
23
Hist. Avg.
77°
58°
24
Hist. Avg.
77°
57°
25
Hist. Avg.
76°
57°
26
Hist. Avg.
76°
56°
27
Hist. Avg.
76°
56°
28
Hist. Avg.
75°
55°
29
Hist. Avg.
75°
55°
30
Hist. Avg.
74°
54°
1
Hist. Avg.
74°
54°
2
Hist. Avg.
74°
54°
3
Hist. Avg.
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Wilton
Wilton's September 2026 forecast shows daily high temperatures ranging from 80° to 85°, with overnight lows between 59° and 66°. The average high for September is 83° with an average low of 63°. 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.
