S
M
T
W
T
F
S
30
87°
64°
31
82°
72°
1
93°
74°
2
77°
72°
3
89°
72°
4
89°
74°
5
84°
70°
6
83°
66°
7
82°
66°
8
85°
64°
9
89°
71°
10
90°
75°
11
81°
69°
12
83°
65°
13
85°
71°
14
78°
62°
15
79°
58°
16
83°
62°
17
84°
69°
18
84°
62°
19
74°
63°
20
75°
65°
21
68°
59°
22
67°
55°
23
63°
58°
24
66°
57°
25
66°
56°
26
69°
54°
27
73°
54°
28
72°
53°
29
74°
55°
30
75°
56°
1
76°
55°
2
77°
59°
3
68°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wallingford
Wallingford's September 2026 forecast shows daily high temperatures ranging from 63° to 84°, with overnight lows between 53° and 65°. The average high for September is 72° with an average low of 57°. 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 Wallingford. See also: October | November | December.
