S
M
T
W
T
F
S
30
84°
70°
31
83°
71°
1
81°
70°
2
86°
71°
3
88°
67°
4
80°
63°
5
78°
64°
6
80°
62°
7
81°
64°
8
80°
65°
9
83°
67°
10
86°
62°
11
75°
58°
12
75°
59°
13
77°
58°
14
79°
62°
15
82°
63°
16
81°
64°
17
81°
64°
18
82°
65°
19
82°
65°
20
78°
64°
21
81°
63°
22
81°
62°
23
80°
63°
24
81°
61°
25
77°
60°
26
72°
55°
27
73°
56°
28
76°
57°
29
78°
59°
30
78°
59°
1
77°
58°
2
77°
59°
3
78°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wallington
Wallington's September 2026 forecast shows daily high temperatures ranging from 72° to 88°, with overnight lows between 55° and 71°. The average high for September is 80° 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 Wallington. See also: October | November | December.