S
M
T
W
T
F
S
30
70°
45°
31
70°
44°
1
72°
49°
2
72°
53°
3
71°
55°
4
79°
55°
5
80°
52°
6
78°
44°
7
72°
44°
8
70°
43°
9
73°
42°
10
69°
44°
11
70°
46°
12
67°
43°
13
73°
49°
14
76°
49°
15
75°
48°
16
68°
47°
17
67°
48°
18
69°
47°
19
71°
40°
20
67°
42°
21
71°
39°
22
70°
37°
23
65°
38°
24
64°
38°
25
64°
42°
26
65°
37°
27
63°
39°
28
63°
41°
29
61°
35°
30
62°
36°
1
62°
42°
2
68°
35°
3
64°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in South Wallingford
South Wallingford's September 2026 forecast shows daily high temperatures ranging from 61° to 80°, with overnight lows between 35° and 55°. The average high for September is 69° with an average low of 44°. 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 South Wallingford. See also: October | November | December.
