S
M
T
W
T
F
S
30
67°
53°
31
67°
53°
1
66°
55°
2
67°
49°
3
67°
55°
4
66°
55°
5
68°
54°
6
68°
54°
7
67°
53°
8
67°
53°
9
65°
50°
10
66°
47°
11
61°
48°
12
64°
53°
13
65°
52°
14
66°
53°
15
65°
52°
16
65°
52°
17
64°
51°
18
65°
51°
19
65°
48°
20
63°
46°
21
62°
51°
22
63°
51°
23
63°
49°
24
61°
49°
25
60°
50°
26
62°
51°
27
61°
50°
28
62°
50°
29
62°
49°
30
61°
49°
1
62°
50°
2
61°
50°
3
61°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Willington
Willington's September 2026 forecast shows daily high temperatures ranging from 60° to 68°, with overnight lows between 46° and 55°. The average high for September is 64° with an average low of 51°. 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 Willington. See also: October | November | December.