S
M
T
W
T
F
S
30
80°
60°
31
81°
60°
1
79°
61°
2
79°
62°
3
78°
63°
4
77°
61°
5
80°
60°
6
79°
61°
7
78°
59°
8
77°
58°
9
76°
59°
10
77°
64°
11
76°
57°
12
76°
58°
13
79°
57°
14
79°
63°
15
78°
63°
16
78°
60°
17
75°
56°
18
75°
55°
19
76°
56°
20
79°
61°
21
76°
56°
22
73°
58°
23
78°
59°
24
77°
60°
25
78°
59°
26
74°
52°
27
75°
53°
28
70°
52°
29
69°
51°
30
68°
51°
1
Hist. Avg.
73°
54°
2
Hist. Avg.
72°
54°
3
Hist. Avg.
72°
53°
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 68° to 81°, with overnight lows between 51° and 64°. The average high for September is 77° with an average low of 58°. 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.